Reporting Station : West Yellowstone Airport, MT
0 Weather Alerts
for your area.
Sunny. Pleasantly warm.
Rise 6:11AM
Set 8:49PM
Waning crescent
Rise2:47AM
Set7:40PM
No Airport Delays Found
AUGUST 1ST, 1985-A nearly stationary thunderstorm deluged Cheyenne WY with rain and hail. Six inches of rain fell in six hours producing the most damaging flash flood of record for the state. Two to five feet of hail covered the ground following the storm, which claimed twelve lives, and caused 65 million dollars property damage.
| AUGUST 1ST, 1985 |
A nearly stationary thunderstorm deluged Cheyenne WY with rain and hail. Six inches of rain fell in six hours producing the most damaging flash flood of record for the state. Two to five feet of hail covered the ground following the storm, which claimed twelve lives, and caused 65 million dollars property damage. |
| AUGUST 1ST, 1989 |
Hurricane Chantal made landfall along the Upper Texas coast about sunrise. Chantal deluged parts of Galveston Island and southeastern Texas with 8 to 12 inches of rain. Unofficial totals ranged up to twenty inches. Winds gusted to 82 mph at Galveston, and reached 76 mph in the Houston area. Tides were 5 to 7 feet high. The hurricane claimed two lives, and caused 100 million dollars damage. |
| JULY 31ST, 1976 |
After a thunderstorm drops 10 in (254 mm) of rain within four hours into two tributaries of the Thompson River, a flash flood in the Thompson Canyon, in northeast Colorado, drowns 139 campers; five others are reported missing as losses climb to $35.5 million. Helicopters lift nearly 1,000 other victims to safety. |
| JULY 31ST, 1987 |
The deadliest tornado in 75 years struck Edmonton, Alberta, killing 26 persons and injuring 200 others. The twister caused more than 75 million dollars damage along its nineteen mile path, leaving 400 families homeless. At the Evergreen Mobile Home Park, up to 200 of the 720 homes were flattened by the tornado. |
| JULY 30TH, 1979 |
A forty-minute hailstorm bombed Fort Collins CO with baseball to softball size hail. Two thousand homes and 2500 automobiles were damaged, and about 25 persons were injured, mainly when hit on the head by the huge stones. A three month old baby died later of injuries. |
| JULY 30TH, 1965 |
The temperature at Portland OR reached 107 degrees to equal their all-time record high. |
| JULY 29TH, 1898 |
The temperature at Prineville OR soared to 119 degrees to establish a state record, which was tied on the 10th of August at Pendleton. |
| JULY 29TH, 1905 |
Heavy rain in southwestern Connecticut caused a dam break, and the resulting flood caused a quarter of a million dollars damage at Bridgeport. As much as eleven inches of rain fell prior to the flood. |
| JULY 28TH, 1986 |
Severe thunderstorms moving out of South Dakota across Iowa produce high winds which derailed eighteen piggyback trailer cars of a westbound freight train near Boone IA. Sixteen of the cars fell 187 feet into the Des Moines River. The thunderstorms also spawned a number of tornadoes, including one which caused twenty-five to fifty million dollars damage at Sloan, near Sioux City IA. |
| JULY 28TH, 1819 |
A small but intense hurricane passed over Bay Saint Louis MS. The hurricane was considered the worst in fifty years. Few houses were left standing either at Bay Saint Louis or at Pass Christian, and much of the Mississippi coast was desolate following the storm. A U.S. cutter was lost along with its thirty-nine crew members. The storm struck the same area that was hit 150 years later by Hurricane Camille. |
| JULY 27TH, 1943 |
On a whim, and flying a single engine AT-6, Lieutenant Ralph O' Hair and Colonel Duckworth were the first to fly into a hurricane. It started regular Air Force flights into hurricanes. |
| Issued By | NWS Field Office | Broadcast Time | Mon, 29 Dec 2014 03:43:00 PST |
| Issuing Time | Mon, 29 Dec 2014 03:43:00 PST | Valid Until | Mon, 29 Dec 2014 03:43:00 PST |
Strong northerly winds are forecast to develop across the San Francisco Bay Area by midday Tuesday and continue through midday Wednesday. A strong..cold and dry storm system will sweep into northern and central California late Monday night and Tuesday morning. This system will generate strong and gusty north to northest winds across the region from midday Tuesday through midday Wednesday.
Rise 6:11AM
Set 8:49PM
Waning crescent
Rise2:47AM
Set7:40PM
No Airport Delays Found
| History | |||
| Weather Station: Helena Regional Airport , MT , US | |||
| August Data | Choose another month |
| Averages | |
|
Average High Temperature
28.94 °F
|
Average Low Temperature
8.96 °F
|
|
Average Mean Temp
19.04 °F
|
Average Dew Point
8.96 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
71.0
|
Average Afternoon Relative Humidity
63.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.60
|
|
Average Snowfall (US Only)
8.98
|
|
| Daily Counts | |
|
Days With Precipitation
8
|
Days With Thunderstorms
*
|
|
Days With Fog
3
|
Days With Snow
8
|
Days With Lows Below Freezing
29
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
62.06 °F
|
Record Low
-41.98 °F
|
|
Record Wind Speed
67.77 mph
|
Record Monthly Snowfall
91.4 "
|
Record 24-hour Snowfall
8.98 "
|
Record Monthly Rainfall
2.80 "
|
Record 24-hour Rainfall
0.59 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
35.96 °F
|
Average Low Temperature
15.08 °F
|
|
Average Mean Temp
26.06 °F
|
Average Dew Point
15.08 °F
|
|
Average Windspeed
11.47 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
56.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.40
|
|
Average Snowfall (US Only)
5.99
|
|
| Daily Counts | |
|
Days With Precipitation
7
|
Days With Thunderstorms
*
|
|
Days With Fog
2
|
Days With Snow
6
|
Days With Lows Below Freezing
26
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
68.00 °F
|
Record Low
-32.98 °F
|
|
Record Wind Speed
63.18 mph
|
Record Monthly Snowfall
50.8 "
|
Record 24-hour Snowfall
8.00 "
|
Record Monthly Rainfall
1.18 "
|
Record 24-hour Rainfall
0.51 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
42.98 °F
|
Average Low Temperature
21.02 °F
|
|
Average Mean Temp
33.08 °F
|
Average Dew Point
19.04 °F
|
|
Average Windspeed
11.47 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
48.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.70
|
|
Average Snowfall (US Only)
8.00
|
|
| Daily Counts | |
|
Days With Precipitation
9
|
Days With Thunderstorms
*
|
|
Days With Fog
2
|
Days With Snow
7
|
Days With Lows Below Freezing
28
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
77.00 °F
|
Record Low
-29.92 °F
|
|
Record Wind Speed
59.71 mph
|
Record Monthly Snowfall
55.8 "
|
Record 24-hour Snowfall
8.98 "
|
Record Monthly Rainfall
1.62 "
|
Record 24-hour Rainfall
0.59 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
55.94 °F
|
Average Low Temperature
30.02 °F
|
|
Average Mean Temp
42.98 °F
|
Average Dew Point
26.06 °F
|
|
Average Windspeed
11.47 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
71.0
|
Average Afternoon Relative Humidity
39.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.90
|
|
Average Snowfall (US Only)
5.99
|
|
| Daily Counts | |
|
Days With Precipitation
8
|
Days With Thunderstorms
1
|
|
Days With Fog
1
|
Days With Snow
4
|
Days With Lows Below Freezing
18
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
84.92 °F
|
Record Low
1.04 °F
|
|
Record Wind Speed
57.41 mph
|
Record Monthly Snowfall
53.3 "
|
Record 24-hour Snowfall
13.00 "
|
Record Monthly Rainfall
2.99 "
|
Record 24-hour Rainfall
0.98 "
|
Record Minimum Monthly Precipitation
0.10 "
|
| Averages | |
|
Average High Temperature
64.94 °F
|
Average Low Temperature
39.92 °F
|
|
Average Mean Temp
53.06 °F
|
Average Dew Point
33.98 °F
|
|
Average Windspeed
11.47 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
39.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.80
|
|
Average Snowfall (US Only)
2.01
|
|
| Daily Counts | |
|
Days With Precipitation
11
|
Days With Thunderstorms
4
|
|
Days With Fog
1
|
Days With Snow
1
|
Days With Lows Below Freezing
4
|
Days above 90° F (32.2° C)
*
|
| Records | |
|
Record High
91.94 °F
|
Record Low
17.06 °F
|
|
Record Wind Speed
68.88 mph
|
Record Monthly Snowfall
33.0 "
|
Record 24-hour Snowfall
13.00 "
|
Record Monthly Rainfall
6.11 "
|
Record 24-hour Rainfall
2.09 "
|
Record Minimum Monthly Precipitation
0.30 "
|
| Averages | |
|
Average High Temperature
73.94 °F
|
Average Low Temperature
46.94 °F
|
|
Average Mean Temp
60.98 °F
|
Average Dew Point
41.00 °F
|
|
Average Windspeed
11.47 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
39.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.90
|
|
Average Snowfall (US Only)
*
|
|
| Daily Counts | |
|
Days With Precipitation
11
|
Days With Thunderstorms
7
|
|
Days With Fog
1
|
Days With Snow
*
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
2
|
| Records | |
|
Record High
100.04 °F
|
Record Low
30.02 °F
|
|
Record Wind Speed
64.29 mph
|
Record Monthly Snowfall
7.6 "
|
Record 24-hour Snowfall
2.99 "
|
Record Monthly Rainfall
4.29 "
|
Record 24-hour Rainfall
1.81 "
|
Record Minimum Monthly Precipitation
0.10 "
|
| Averages | |
|
Average High Temperature
82.94 °F
|
Average Low Temperature
51.98 °F
|
|
Average Mean Temp
68.00 °F
|
Average Dew Point
44.06 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
67.0
|
Average Afternoon Relative Humidity
30.0
|
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
1.10
|
|
Average Snowfall (US Only)
*
|
|
| Daily Counts | |
|
Days With Precipitation
7
|
Days With Thunderstorms
8
|
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
8
|
| Records | |
|
Record High
102.02 °F
|
Record Low
35.96 °F
|
|
Record Wind Speed
80.35 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
3.90 "
|
Record 24-hour Rainfall
1.42 "
|
Record Minimum Monthly Precipitation
0.10 "
|
| Averages | |
|
Average High Temperature
82.04 °F
|
Average Low Temperature
51.08 °F
|
|
Average Mean Temp
66.02 °F
|
Average Dew Point
42.98 °F
|
|
Average Windspeed
9.18 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
67.0
|
Average Afternoon Relative Humidity
30.0
|
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
1.20
|
|
Average Snowfall (US Only)
0.00
|
|
| Daily Counts | |
|
Days With Precipitation
8
|
Days With Thunderstorms
8
|
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
6
|
| Records | |
|
Record High
105.08 °F
|
Record Low
32.00 °F
|
|
Record Wind Speed
60.88 mph
|
Record Monthly Snowfall
0.0 "
|
Record 24-hour Snowfall
0.00 "
|
Record Monthly Rainfall
4.22 "
|
Record 24-hour Rainfall
1.81 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
69.98 °F
|
Average Low Temperature
41.00 °F
|
|
Average Mean Temp
55.94 °F
|
Average Dew Point
35.96 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
36.0
|
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
1.00
|
|
Average Snowfall (US Only)
2.01
|
|
| Daily Counts | |
|
Days With Precipitation
7
|
Days With Thunderstorms
2
|
|
Days With Fog
1
|
Days With Snow
1
|
Days With Lows Below Freezing
3
|
Days above 90° F (32.2° C)
1
|
| Records | |
|
Record High
98.96 °F
|
Record Low
17.96 °F
|
|
Record Wind Speed
53.94 mph
|
Record Monthly Snowfall
35.5 "
|
Record 24-hour Snowfall
13.00 "
|
Record Monthly Rainfall
3.39 "
|
Record 24-hour Rainfall
1.62 "
|
Record Minimum Monthly Precipitation
0.10 "
|
| Averages | |
|
Average High Temperature
57.92 °F
|
Average Low Temperature
30.92 °F
|
|
Average Mean Temp
44.96 °F
|
Average Dew Point
28.94 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
43.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.60
|
|
Average Snowfall (US Only)
2.01
|
|
| Daily Counts | |
|
Days With Precipitation
6
|
Days With Thunderstorms
*
|
|
Days With Fog
1
|
Days With Snow
2
|
Days With Lows Below Freezing
17
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
84.92 °F
|
Record Low
-2.92 °F
|
|
Record Wind Speed
53.94 mph
|
Record Monthly Snowfall
27.9 "
|
Record 24-hour Snowfall
7.01 "
|
Record Monthly Rainfall
2.72 "
|
Record 24-hour Rainfall
0.79 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
42.08 °F
|
Average Low Temperature
21.02 °F
|
|
Average Mean Temp
32.00 °F
|
Average Dew Point
19.94 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
58.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.50
|
|
Average Snowfall (US Only)
5.99
|
|
| Daily Counts | |
|
Days With Precipitation
7
|
Days With Thunderstorms
*
|
|
Days With Fog
2
|
Days With Snow
5
|
Days With Lows Below Freezing
26
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
71.96 °F
|
Record Low
-38.92 °F
|
|
Record Wind Speed
60.88 mph
|
Record Monthly Snowfall
83.8 "
|
Record 24-hour Snowfall
18.99 "
|
Record Monthly Rainfall
1.50 "
|
Record 24-hour Rainfall
0.59 "
|
Record Minimum Monthly Precipitation
* "
|
| Averages | |
|
Average High Temperature
32.00 °F
|
Average Low Temperature
12.02 °F
|
|
Average Mean Temp
21.92 °F
|
Average Dew Point
12.92 °F
|
|
Average Windspeed
10.35 mph
|
Average Wind Direction
270.0
|
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
66.0
|
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
0.60
|
|
Average Snowfall (US Only)
8.98
|
|
| Daily Counts | |
|
Days With Precipitation
8
|
Days With Thunderstorms
*
|
|
Days With Fog
4
|
Days With Snow
8
|
Days With Lows Below Freezing
30
|
Days above 90° F (32.2° C)
0
|
| Records | |
|
Record High
64.04 °F
|
Record Low
-38.02 °F
|
|
Record Wind Speed
57.41 mph
|
Record Monthly Snowfall
58.4 "
|
Record 24-hour Snowfall
10.01 "
|
Record Monthly Rainfall
1.50 "
|
Record 24-hour Rainfall
0.51 "
|
Record Minimum Monthly Precipitation
* "
|
Rise 6:11AM
Set 8:49PM
Waning crescent
Rise2:47AM
Set7:40PM
No Airport Delays Found
| Day | Reason | Upper Soil Moisture | Lower Soil Moisture | |
| Thursday |  |
Fire danger extreme | 17% | 24% |
| Friday | |
Fire danger extreme | 17% | 24% |
| Saturday | |
Fire danger extreme | 17% | 24% |
| Sunday | |
Fire danger extreme | 17% | 24% |
| Monday | |
Fire danger extreme | 17% | 24% |
| Tuesday | |
Fire danger extreme | 17% | 24% |
Rise 6:11AM
Set 8:49PM
Waning crescent
Rise2:47AM
Set7:40PM
No Airport Delays Found
Rise 6:11AM
Set 8:49PM
Waning crescent
Rise2:47AM
Set7:40PM
No Airport Delays Found
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