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

Today's forecast for Sumatra shows a low of 33 degrees Fahrenheit. Cloudy, with a low around 33.

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

The 7-day forecast for Sumatra shows highs from 34 to 40 degrees and lows from 17 to 33 degrees Fahrenheit. Expect precipitation on 6 days with chances of 20% or higher.

Will it rain in Sumatra, MT this week?

Yes, rain is possible in Sumatra this week. Precipitation chances: Wednesday (60% chance), Thursday (20% chance), Friday (50% chance), Saturday (20% chance), Sunday (20% chance), Monday (20% chance).

How accurate is the Sumatra weather forecast?

WeatherForYou provides highly accurate Sumatra 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.

Sumatra, MT Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Warning

Current Conditions From Nearby Station

Switch to Metric Units

39°F
Feels Like 37°F

Humidity 71% Dew Point 30°F Wind SSW 3 MPH Gusts 5 Barometer N/A

Report from a MADIS/MESONET weather station 7.6 mi. ESE of central Sumatra
at 10:15 PM Tue, Dec 16, 2025

Point Forecast at a Glance

TueDec 16

WedDec 17

60%

ThuDec 18

FriDec 19

40%

SatDec 20

20%

SunDec 21

MonDec 22

20%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 34°F to 40°F. Unsettled weather expected with wintry mix likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 1°F above the historical average for December. Normal highs for this period are around 36°F with lows around 13°F.

This Date in Weather History

1835 - New England experienced one of their coldest days of record. At noon on that bitterly cold Wednesday the mercury stood at four degrees below at Boston, 15 degrees below at Norfolk CT, and 17 degrees below at Hanover NH. The temperature at Boston was 12 degrees below zero by sunset. Gale force winds accompanied the severe cold, and that night a great New York City fire destroyed much of the financial district.

Sumatra, MT 7 Day Weather Forecast Details

Tuesday Dec 16

Night: Cloudy, with a low around 33. South southwest wind 10 to 16 mph.

Wednesday Dec 17

Day: Showers likely, mainly between 11am and 2pm. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 42 by 10am, then falling to around 33 during the remainder of the day. South southwest wind 17 to 22 mph becoming west 31 to 36 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 60%.

Night: A 20 percent chance of snow showers after 11pm. Partly cloudy, with a low around 17. Northwest wind 31 to 41 mph decreasing to 13 to 23 mph. Winds could gust as high as 55 mph.

Thursday Dec 18

Day: Increasing clouds, with a high near 35. Northwest wind 7 to 10 mph becoming south in the afternoon.

Night: A 20 percent chance of snow showers before 11pm. Cloudy, with a temperature falling to near 30 by 10pm, then rising to around 41 during the remainder of the night. South southwest wind 9 to 16 mph.

Friday Dec 19

Day: A slight chance of rain showers before 11am, then a chance of rain and snow showers between 11am and 2pm, then a chance of snow showers after 2pm. Mostly cloudy, with a temperature rising to near 46 by 11am, then falling to around 35 during the remainder of the day. West southwest wind around 18 mph becoming northwest in the afternoon. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 19. Northwest wind 9 to 13 mph. New snow accumulation of less than one inch possible.

Saturday Dec 20

Day: A 20 percent chance of snow showers. Mostly sunny, with a high near 34. West wind 7 to 10 mph.

Night: Partly cloudy, with a low around 20. Southwest wind around 9 mph.

Sunday Dec 21

Day: Partly sunny, with a high near 36. Southwest wind around 8 mph becoming south southeast in the afternoon.

Night: A slight chance of rain and snow showers. Mostly cloudy, with a low around 21. Southeast wind around 7 mph becoming south southwest after midnight. Chance of precipitation is 20%.

Monday Dec 22

Day: A slight chance of rain and snow showers. Mostly cloudy, with a high near 40. Southwest wind 7 to 9 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.

Night: A slight chance of rain and snow showers. Mostly cloudy, with a low around 22. West northwest wind around 7 mph. Chance of precipitation is 20%.

Tuesday Dec 23

Day: Partly sunny, with a high near 38. South southeast wind around 7 mph.

About Sumatra, MT

Sumatra is an unincorporated community in far northwestern Rosebud County, Montana, United States. It consists of a church and a post office, with respective houses, surrounded by open ranch land. Sumatra was established in 1905 as a station stop, called Summit, on the Milwaukee Road. The town name was changed to Sumatra, after an Indonesian island, with the opening of the post office in 1910. Roger Youderian born in Sumatra (January 21, 1924 – January 8, 1956) was an American Christian missionary to Ecuador of Armenian descent who, along with four others, was killed while attempting to evangelize the Huaorani people through efforts known as Operation Auca.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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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