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As of 01:35 MDT

Weather in Sumner, MT

43°Current weather

Sumner, Thursday, 8 October, 01:35

Mostly clear. Feels like 38°. High 68°, low 41°.

Pressure30.06 inHg
Wind7.6 mph SE
Humidity58%
Visibility6.2 mi
Dew point29°

10-day forecast for Sumner, MT: 26° to 79°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

79°
Best day: Friday, October 9
37°
Worst day: Thursday, October 15

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

Fri, 0979° / 45°0Partly cloudy
MorningOvercast49°feels 46°
AfternoonPartly cloudy78°feels 76°
EveningPartly cloudy64°feels 62°
OvernightOvercast48°feels 43°
79 °Partly cloudy

Sumner, Friday, 9 October

Partly cloudy. High 79°, low 45°.

Pressure29.44 inHg
Wind13 mph SW
Humidity22%
Visibility6.2 mi
Dew point33°
Sat, 1058° / 37°0.06Light rain
MorningOvercast43°feels 36°
AfternoonOvercast41°feels 34°
EveningOvercast38°feels 29°
OvernightLight rain52°feels 50°
58 °Light rain

Sumner, Saturday, 10 October

Light rain. High 58°, low 37°.

Pressure29.80 inHg
Wind14.6 mph NW
Humidity67%
Visibility6.2 mi
Dew point31°
Sun, 1138° / 34°0Overcast
MorningOvercast34°feels 25°
AfternoonOvercast37°feels 30°
EveningOvercast36°feels 29°
OvernightOvercast35°feels 26°
38 °Overcast

Sumner, Sunday, 11 October

Overcast. High 38°, low 34°.

Pressure30.21 inHg
Wind9.8 mph N
Humidity77%
Visibility6.2 mi
Dew point24°
Mon, 1242° / 33°0.01Light snow
MorningLight snow35°feels 30°
AfternoonLight snow39°feels 37°
EveningLight snow40°feels 37°
OvernightLight snow34°feels 30°
42 °Light snow

Sumner, Monday, 12 October

Light snow. High 42°, low 33°.

Pressure30.21 inHg
Wind7.8 mph SW
Humidity68%
Visibility—
Dew point28°
Tue, 1361° / 29°0Clear
MorningClear36°feels 31°
AfternoonClear52°feels 49°
EveningClear55°feels 51°
OvernightClear45°feels 41°
61 °Clear

Sumner, Tuesday, 13 October

Clear. High 61°, low 29°.

Pressure30.06 inHg
Wind10.9 mph W
Humidity43%
Visibility—
Dew point26°
Wed, 1455° / 38°0Mostly clear
MorningMostly clear48°feels 43°
AfternoonMostly clear53°feels 49°
EveningMostly clear41°feels 32°
OvernightMostly clear39°feels 30°
55 °Mostly clear

Sumner, Wednesday, 14 October

Mostly clear. High 55°, low 38°.

Pressure29.56 inHg
Wind21.2 mph NW
Humidity38%
Visibility—
Dew point28°
Thu, 1537° / 30°0Overcast
MorningOvercast35°feels 23°
AfternoonOvercast36°feels 25°
EveningOvercast34°feels 24°
OvernightOvercast31°feels 21°
37 °Overcast

Sumner, Thursday, 15 October

Overcast. High 37°, low 30°.

Pressure30.27 inHg
Wind23.8 mph NW
Humidity53%
Visibility—
Dew point20°
Fri, 1645° / 26°0Clear
MorningClear30°feels 24°
AfternoonClear39°feels 37°
EveningClear41°feels 37°
OvernightClear35°feels 28°
45 °Clear

Sumner, Friday, 16 October

Clear. High 45°, low 26°.

Pressure30.47 inHg
Wind8.6 mph NW
Humidity42%
Visibility—
Dew point16°
Sat, 1753° / 31°0Mostly clear
MorningMostly clear36°feels 29°
AfternoonMostly clear49°feels 45°
EveningMostly clear48°feels 43°
OvernightMostly clear40°feels 33°
53 °Mostly clear

Sumner, Saturday, 17 October

Mostly clear. High 53°, low 31°.

Pressure30.03 inHg
Wind14.5 mph NW
Humidity25%
Visibility—
Dew point12°

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.