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As of 11:29 MDT

Weather in Sumner, MT

60°Current weather

Sumner, Thursday, 8 October, 11:29

Overcast. Feels like 58°. High 64°, low 40°.

Pressure30.00 inHg
Wind5.9 mph NW
Humidity43%
Visibility6.2 mi
Dew point37°

10-day forecast for Sumner, MT: 27° to 78°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

78°
Best day: Friday, October 9
39° · 0.27 in
Worst day: Monday, October 12

Tap any day below to see morning, afternoon, evening and overnight.

Fri, 0978° / 45°0Partly cloudy
MorningOvercast49°feels 46°
AfternoonPartly cloudy77°feels 75°
EveningOvercast55°feels 52°
OvernightOvercast47°feels 42°
78 °Partly cloudy

Sumner, Friday, 9 October

Partly cloudy. High 78°, low 45°.

Pressure29.47 inHg
Wind11.8 mph SW
Humidity23%
Visibility6.2 mi
Dew point33°
Sat, 1057° / 40°0Light rain
MorningOvercast45°feels 40°
AfternoonOvercast47°feels 42°
EveningOvercast42°feels 35°
OvernightOvercast55°feels 53°
57 °Light rain

Sumner, Saturday, 10 October

Light rain. High 57°, low 40°.

Pressure29.80 inHg
Wind12.6 mph NW
Humidity63%
Visibility6.2 mi
Dew point34°
Sun, 1139° / 35°0.2Snow
MorningLight rain38°feels 29°
AfternoonOvercast38°feels 30°
EveningOvercast36°feels 28°
OvernightLight rain38°feels 31°
39 °Snow

Sumner, Sunday, 11 October

Snow. High 39°, low 35°.

Pressure30.21 inHg
Wind12.6 mph NE
Humidity92%
Visibility4.5 mi
Dew point34°
Mon, 1239° / 33°0.27Snow
MorningSnow33°feels 26°
AfternoonSnow35°feels 30°
EveningSnow38°feels 35°
OvernightLight snow33°feels 25°
39 °Snow

Sumner, Monday, 12 October

Snow. High 39°, low 33°.

Pressure30.18 inHg
Wind10.8 mph NE
Humidity96%
Visibility—
Dew point33°
Tue, 1346° / 34°0Overcast
MorningOvercast36°feels 31°
AfternoonOvercast42°feels 37°
EveningOvercast43°feels 39°
OvernightOvercast38°feels 32°
46 °Overcast

Sumner, Tuesday, 13 October

Overcast. High 46°, low 34°.

Pressure30.15 inHg
Wind8.8 mph S
Humidity70%
Visibility—
Dew point31°
Wed, 1461° / 39°0Clear
MorningClear47°feels 42°
AfternoonClear58°feels 55°
EveningClear51°feels 47°
OvernightClear45°feels 38°
61 °Clear

Sumner, Wednesday, 14 October

Clear. High 61°, low 39°.

Pressure29.56 inHg
Wind22.1 mph N
Humidity35%
Visibility—
Dew point29°
Thu, 1541° / 35°0Overcast
MorningOvercast35°feels 22°
AfternoonOvercast35°feels 23°
EveningOvercast35°feels 25°
OvernightOvercast35°feels 25°
41 °Overcast

Sumner, Thursday, 15 October

Overcast. High 41°, low 35°.

Pressure30.33 inHg
Wind28.4 mph N
Humidity71%
Visibility—
Dew point26°
Fri, 1647° / 27°0Clear
MorningClear31°feels 26°
AfternoonClear42°feels 36°
EveningClear43°feels 36°
OvernightClear37°feels 29°
47 °Clear

Sumner, Friday, 16 October

Clear. High 47°, low 27°.

Pressure30.56 inHg
Wind13.7 mph S
Humidity41%
Visibility—
Dew point18°
Sat, 1757° / 35°0Clear
MorningClear40°feels 31°
AfternoonClear51°feels 48°
EveningClear50°feels 46°
OvernightClear43°feels 37°
57 °Clear

Sumner, Saturday, 17 October

Clear. High 57°, low 35°.

Pressure30.09 inHg
Wind22.7 mph S
Humidity36%
Visibility—
Dew point23°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Sumner, MT around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.