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As of 18:19 MDT

Weather in Sumner, MT

62°Current weather

Sumner, Wednesday, 7 October, 18:19

Overcast. Feels like 60°. High 66°, low 42°.

Pressure30.06 inHg
Wind4.3 mph NE
Humidity31%
Visibility6.2 mi
Dew point32°

10-day forecast for Sumner, MT: 23° to 78°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

78°
Best day: Friday, October 9
35° · 0.07 in
Worst day: Thursday, October 15

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

Thu, 0866° / 39°0Mostly clear
MorningClear39°feels 37°
AfternoonMostly clear64°feels 62°
EveningOvercast51°feels 49°
OvernightMostly clear42°feels 38°
66 °Mostly clear

Sumner, Thursday, 8 October

Mostly clear. High 66°, low 39°.

Pressure29.97 inHg
Wind3.6 mph NW
Humidity41%
Visibility6.2 mi
Dew point38°
Fri, 0978° / 49°0Partly cloudy
MorningOvercast54°feels 51°
AfternoonPartly cloudy78°feels 76°
EveningOvercast62°feels 60°
OvernightOvercast52°feels 50°
78 °Partly cloudy

Sumner, Friday, 9 October

Partly cloudy. High 78°, low 49°.

Pressure29.44 inHg
Wind13.3 mph SW
Humidity22%
Visibility6.2 mi
Dew point32°
Sat, 1057° / 38°0.06Light rain
MorningOvercast45°feels 38°
AfternoonLight rain42°feels 35°
EveningOvercast39°feels 30°
OvernightOvercast54°feels 51°
57 °Light rain

Sumner, Saturday, 10 October

Light rain. High 57°, low 38°.

Pressure29.80 inHg
Wind14.2 mph NW
Humidity79%
Visibility5.6 mi
Dew point36°
Sun, 1137° / 34°0.06Light snow
MorningOvercast35°feels 26°
AfternoonOvercast36°feels 29°
EveningLight snow35°feels 28°
OvernightOvercast36°feels 28°
37 °Light snow

Sumner, Sunday, 11 October

Light snow. High 37°, low 34°.

Pressure30.24 inHg
Wind12.1 mph NE
Humidity78%
Visibility6.2 mi
Dew point26°
Mon, 1240° / 33°0.01Light snow
MorningLight snow35°feels 29°
AfternoonLight snow38°feels 34°
EveningLight snow39°feels 35°
OvernightLight snow37°feels 31°
40 °Light snow

Sumner, Monday, 12 October

Light snow. High 40°, low 33°.

Pressure30.24 inHg
Wind8.8 mph NE
Humidity74%
Visibility—
Dew point30°
Tue, 1362° / 31°0Clear
MorningClear38°feels 33°
AfternoonClear55°feels 53°
EveningClear56°feels 53°
OvernightClear48°feels 44°
62 °Clear

Sumner, Tuesday, 13 October

Clear. High 62°, low 31°.

Pressure29.65 inHg
Wind21.3 mph SW
Humidity49%
Visibility—
Dew point33°
Wed, 1451° / 36°0.01Light snow
MorningLight snow47°feels 41°
AfternoonLight snow49°feels 44°
EveningLight snow37°feels 27°
OvernightLight snow38°feels 28°
51 °Light snow

Sumner, Wednesday, 14 October

Light snow. High 51°, low 36°.

Pressure29.56 inHg
Wind23.2 mph W
Humidity40%
Visibility—
Dew point27°
Thu, 1535° / 28°0.07Light snow
MorningLight snow33°feels 21°
AfternoonLight snow33°feels 22°
EveningLight snow33°feels 23°
OvernightLight snow29°feels 20°
35 °Light snow

Sumner, Thursday, 15 October

Light snow. High 35°, low 28°.

Pressure30.36 inHg
Wind21.6 mph NW
Humidity71%
Visibility—
Dew point24°
Fri, 1638° / 23°0Clear
MorningClear26°feels 20°
AfternoonClear35°feels 28°
EveningClear35°feels 29°
OvernightClear30°feels 24°
38 °Clear

Sumner, Friday, 16 October

Clear. High 38°, low 23°.

Pressure30.68 inHg
Wind9.6 mph SW
Humidity60%
Visibility—
Dew point20°

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.