Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Hays Site MT-66 MP 10.5 (MTHAY)

Lat: 47.91928°NLon: 108.72611°WElev: 3898.0ft.

82°F

28°C

Humidity	27%
Wind Speed	ENE 8 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Heat Index	80°F (27°C)
Last update	16 Aug 06:30 PM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

10 Miles SSW Zortman MT

Tonight
Low: 64 °F
Chance
T-storms then
Slight Chance
Showers
Sunday
High: 85 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 62 °F
Chance
T-storms then
Mostly Cloudy
Monday
High: 88 °F
Sunny
Monday Night
Low: 65 °F
Mostly Clear
Tuesday
High: 93 °F
Sunny
Tuesday Night
Low: 67 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny
Wednesday Night
Low: 63 °F
Mostly Clear
then Slight
Chance
Showers

Detailed Forecast

Tonight

A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Increasing clouds, with a low around 64. East wind around 6 mph becoming west in the evening. Chance of precipitation is 30%.

Sunday

A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 85. West northwest wind around 7 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. North wind 5 to 7 mph becoming south southeast in the evening.

Monday

Sunny, with a high near 88. Light and variable wind becoming south around 6 mph in the afternoon.

Monday Night

Mostly clear, with a low around 65. Southwest wind around 6 mph becoming northeast after midnight.

Tuesday

Sunny, with a high near 93. Light and variable wind becoming southeast 5 to 7 mph in the morning.

Tuesday Night

Mostly clear, with a low around 67. East northeast wind around 7 mph.

Wednesday

Sunny, with a high near 92. East wind 6 to 10 mph becoming west southwest in the morning.

Wednesday Night

A 20 percent chance of showers after midnight. Partly cloudy, with a low around 63. Northwest wind 6 to 10 mph.