Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Sidney-Richland (KSDY)

Lat: 47.7°NLon: 104.2°WElev: 1985.0ft.

Partly Cloudy

82°F

28°C

Humidity	58%
Wind Speed	SSW 4 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	84°F (29°C)
Last update	17 Aug 12:35 PM MDT

More Information:

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

Extended Forecast for

4 Miles SSW Sidney MT

This Afternoon
High: 86 °F
Slight Chance
T-storms
Tonight
Low: 63 °F
Slight Chance
T-storms
Monday
High: 89 °F
Slight Chance
Showers then
Slight Chance
T-storms
Monday Night
Low: 63 °F
Mostly Clear
Tuesday
High: 95 °F
Sunny
Tuesday Night
Low: 67 °F
Mostly Clear
Wednesday
High: 100 °F
Hot
Wednesday Night
Low: 65 °F
Partly Cloudy
Thursday
High: 85 °F
Sunny

Detailed Forecast

This Afternoon

A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 86. Southeast wind around 6 mph becoming east northeast. Chance of precipitation is 20%.

Tonight

A 20 percent chance of showers and thunderstorms, mainly between 3am and 5am. Increasing clouds, with a low around 63. East wind around 6 mph becoming calm in the evening.

Monday

A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 89. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 63. East southeast wind 3 to 7 mph.

Tuesday

Sunny, with a high near 95. Calm wind becoming southeast 5 to 7 mph in the afternoon.

Tuesday Night

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

Wednesday

Sunny and hot, with a high near 100. South southeast wind 6 to 13 mph, with gusts as high as 21 mph.

Wednesday Night

Partly cloudy, with a low around 65. South wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.

Thursday

Sunny, with a high near 85. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.