What is today's weather forecast for Casper, MT?

Today's forecast for Casper shows a high of 39 degrees Fahrenheit. Patchy fog before 9am.

What is the 7-day weather forecast for Casper, MT?

The 7-day forecast for Casper shows highs from 5 to 39 degrees and lows from -8 to 21 degrees Fahrenheit. Expect precipitation on 6 days with chances of 20% or higher.

Will it rain in Casper, MT this week?

Yes, rain is possible in Casper this week. Precipitation chances: Monday (50% chance), Tuesday (40% chance), Wednesday (80% chance), Thursday (60% chance), Friday (50% chance), Saturday (40% chance).

How accurate is the Casper weather forecast?

WeatherForYou provides highly accurate Casper forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Casper, MT Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Warning - Winter Weather Advisory

Current Conditions From Nearby Local Station

Switch to Metric Units

35°F
Feels Like 28°F

Humidity 97% Dew Point 35°F Wind W 8 MPH Gusts 11 Barometer 29.84 in.

Report from a MADIS/MESONET weather station 3.7 mi. W of central Casper
at 4:00 AM Mon, Dec 8, 2025

Point Forecast at a Glance

MonDec 8

TueDec 9

40%

WedDec 10

80%

ThuDec 11

60%

-8

FriDec 12

40%

-3

SatDec 13

40%

SunDec 14

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 39°F to a low of 5°F, then recover to 32°F by week's end. Unsettled weather expected with rain or snow likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 8°F below the historical average for December. Normal highs for this period are around 33°F with lows around 8°F.

This Date in Weather History

1938 - The temperature at La Mesa, CA, soared to 108 degrees to set a U.S. record for the month of December.

Casper, MT 7 Day Weather Forecast Details

Monday Dec 8

Day: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 39. Breezy, with a west wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 31 mph.

Night: A 50 percent chance of rain, mainly after 10pm. Cloudy, with a temperature falling to near 32 by 9pm, then rising to around 40 during the remainder of the night. Southwest wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph.

Tuesday Dec 9

Day: A 40 percent chance of rain before 11am. Patchy fog between 11am and 2pm. Otherwise, mostly cloudy, with a temperature rising to near 44 by 10am, then falling to around 35 during the remainder of the day. Windy, with a west northwest wind 24 to 30 mph, with gusts as high as 46 mph.

Night: Mostly cloudy, with a low around 21. West northwest wind 11 to 16 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.

Wednesday Dec 10

Day: Snow before 2pm, then rain and snow. Patchy fog after 5pm. High near 36. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Night: Rain and snow likely before 11pm, then a chance of snow. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 15. Southwest wind around 10 mph becoming north northwest after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Dec 11

Day: Snow likely. Mostly cloudy, with a high near 23. North northwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Night: A 50 percent chance of snow. Mostly cloudy, with a low around -8. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.

Friday Dec 12

Day: A 40 percent chance of snow. Cloudy, with a high near 5. North wind around 6 mph becoming east southeast in the afternoon.

Night: A 50 percent chance of snow. Cloudy, with a low around -3. East southeast wind around 6 mph.

Saturday Dec 13

Day: A 40 percent chance of snow. Mostly cloudy, with a high near 13. Northeast wind around 7 mph becoming west in the afternoon.

Night: Mostly cloudy, with a low around 1.

Sunday Dec 14

Day: Partly sunny, with a high near 32.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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