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As of 13:30 MDT

Weather in Sumner, MT

82°Current weather

Sumner, Saturday, 8 August, 13:30

Partly cloudy. Feels like 80°. High 84°, low 54°.

Pressure29.83 inHg
Wind8.7 mph NE
Humidity25%
Visibility6.2 mi
Dew point42°

10-day forecast for Sumner, MT: 49° to 86°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

86°
Best day: Monday, August 17
84° · 0.26 in
Worst day: Friday, August 14

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

Sun, 0983° / 57°0Clear
MorningOvercast62°feels 60°
AfternoonClear82°feels 80°
EveningMostly clear69°feels 68°
OvernightOvercast63°feels 61°
83 °Clear

Sumner, Sunday, 9 August

Clear. High 83°, low 57°.

Pressure29.83 inHg
Wind10 mph S
Humidity30%
Visibility6.2 mi
Dew point46°
Mon, 1082° / 49°0Clear
MorningOvercast58°feels 57°
AfternoonClear78°feels 77°
EveningOvercast77°feels 76°
OvernightOvercast53°feels 51°
82 °Clear

Sumner, Monday, 10 August

Clear. High 82°, low 49°.

Pressure29.91 inHg
Wind11.2 mph E
Humidity37%
Visibility6.2 mi
Dew point45°
Tue, 1182° / 58°0Clear
MorningOvercast64°feels 62°
AfternoonClear80°feels 79°
EveningClear76°feels 75°
OvernightPartly cloudy64°feels 62°
82 °Clear

Sumner, Tuesday, 11 August

Clear. High 82°, low 58°.

Pressure29.94 inHg
Wind8.5 mph N
Humidity31%
Visibility6.2 mi
Dew point44°
Wed, 1281° / 59°0Partly cloudy
MorningPartly cloudy64°feels 63°
AfternoonPartly cloudy76°feels 75°
EveningPartly cloudy74°feels 73°
OvernightPartly cloudy63°feels 61°
81 °Partly cloudy

Sumner, Wednesday, 12 August

Partly cloudy. High 81°, low 59°.

Pressure29.94 inHg
Wind14.1 mph E
Humidity34%
Visibility6.2 mi
Dew point47°
Thu, 1382° / 57°0.01Light rain
MorningLight rain62°feels 61°
AfternoonLight rain77°feels 75°
EveningLight rain81°feels 80°
OvernightLight rain73°feels 71°
82 °Light rain

Sumner, Thursday, 13 August

Light rain. High 82°, low 57°.

Pressure30.00 inHg
Wind22.6 mph SE
Humidity32%
Visibility—
Dew point41°
Fri, 1484° / 66°0.26Rain
MorningRain67°feels 66°
AfternoonRain73°feels 72°
EveningRain82°feels 80°
OvernightRain70°feels 69°
84 °Rain

Sumner, Friday, 14 August

Rain. High 84°, low 66°.

Pressure29.88 inHg
Wind22.5 mph SE
Humidity63%
Visibility—
Dew point57°
Sat, 1577° / 57°0Overcast
MorningOvercast61°feels 60°
AfternoonOvercast72°feels 70°
EveningOvercast72°feels 71°
OvernightOvercast66°feels 65°
77 °Overcast

Sumner, Saturday, 15 August

Overcast. High 77°, low 57°.

Pressure30.06 inHg
Wind11.4 mph NE
Humidity36%
Visibility—
Dew point41°
Sun, 1685° / 59°0.04Light rain
MorningLight rain65°feels 64°
AfternoonLight rain79°feels 79°
EveningLight rain83°feels 81°
OvernightLight rain73°feels 72°
85 °Light rain

Sumner, Sunday, 16 August

Light rain. High 85°, low 59°.

Pressure29.94 inHg
Wind16 mph W
Humidity44%
Visibility—
Dew point52°
Mon, 1786° / 66°0Partly cloudy
MorningPartly cloudy71°feels 69°
AfternoonPartly cloudy83°feels 81°
EveningPartly cloudy82°feels 80°
OvernightPartly cloudy72°feels 71°
86 °Partly cloudy

Sumner, Monday, 17 August

Partly cloudy. High 86°, low 66°.

Pressure29.94 inHg
Wind16.3 mph NW
Humidity21%
Visibility—
Dew point37°

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.