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As of 11:20 MDT

Weather in Sumner, MT

74°Current weather

Sumner, Saturday, 8 August, 11:20

Mostly clear. Feels like 73°. High 86°, low 54°.

Pressure29.85 inHg
Wind8.9 mph E
Humidity32%
Visibility6.2 mi
Dew point42°

Two-week outlook for Sumner, MT: week one averages a high of 79° and week two 84.8°, so week two runs 5.8° warmer than week one. Around 0.0 inches of precipitation are expected over the 14 days, across 0 wet days. The nearest weekend, August 8: 86°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 8 – August 14)79°55.6°0.0 in / 0 d—
2nd (August 15 – August 21)84.8°62.6°0.0 in / 0 d—

Weekend weather

Sat, August 8
Partly cloudy
86°54°
no precip.
Sun, August 9
Clear
84°57°
no precip.
Sat, August 15
Overcast
83°58°
no precip.
Sun, August 16
Light rain
82°63°
0.01 in
Sun, 0984° / 57°0Clear
84 °Clear

Sumner, Sunday, 9 August

Clear. High 84°, low 57°.

Pressure29.83 inHg
Wind11.3 mph S
Humidity30%
Visibility6.2 mi
Dew point45°
Mon, 1081° / 54°0Partly cloudy
81 °Partly cloudy

Sumner, Monday, 10 August

Partly cloudy. High 81°, low 54°.

Pressure29.91 inHg
Wind11.2 mph E
Humidity35%
Visibility6.2 mi
Dew point44°
Tue, 1182° / 58°0Overcast
82 °Overcast

Sumner, Tuesday, 11 August

Overcast. High 82°, low 58°.

Pressure30.00 inHg
Wind6.8 mph N
Humidity34%
Visibility6.2 mi
Dew point46°
Wed, 1265° / 57°0Light rain
65 °Light rain

Sumner, Wednesday, 12 August

Light rain. High 65°, low 57°.

Pressure30.15 inHg
Wind12.5 mph NE
Humidity54%
Visibility—
Dew point44°
Thu, 1373° / 50°0Overcast
73 °Overcast

Sumner, Thursday, 13 August

Overcast. High 73°, low 50°.

Pressure30.09 inHg
Wind15.4 mph SE
Humidity31%
Visibility—
Dew point34°
Fri, 1482° / 59°0Overcast
82 °Overcast

Sumner, Friday, 14 August

Overcast. High 82°, low 59°.

Pressure29.94 inHg
Wind14.2 mph E
Humidity27%
Visibility—
Dew point37°
Sat, 1583° / 58°0Overcast
83 °Overcast

Sumner, Saturday, 15 August

Overcast. High 83°, low 58°.

Pressure30.00 inHg
Wind15.4 mph SE
Humidity31%
Visibility—
Dew point43°
Sun, 1682° / 63°0.01Light rain
82 °Light rain

Sumner, Sunday, 16 August

Light rain. High 82°, low 63°.

Pressure29.97 inHg
Wind17.4 mph SE
Humidity40%
Visibility—
Dew point50°
Mon, 1786° / 68°0Overcast
86 °Overcast

Sumner, Monday, 17 August

Overcast. High 86°, low 68°.

Pressure29.91 inHg
Wind16.2 mph N
Humidity27%
Visibility—
Dew point44°
Tue, 1881° / 60°0Overcast
81 °Overcast

Sumner, Tuesday, 18 August

Overcast. High 81°, low 60°.

Pressure30.09 inHg
Wind10.1 mph NE
Humidity38%
Visibility—
Dew point46°
Wed, 1983° / 63°0Overcast
83 °Overcast

Sumner, Wednesday, 19 August

Overcast. High 83°, low 63°.

Pressure30.09 inHg
Wind18.6 mph SE
Humidity30%
Visibility—
Dew point44°
Thu, 2087° / 62°0Mostly clear
87 °Mostly clear

Sumner, Thursday, 20 August

Mostly clear. High 87°, low 62°.

Pressure29.94 inHg
Wind19 mph SE
Humidity37%
Visibility—
Dew point49°
Fri, 2192° / 64°0Overcast
92 °Overcast

Sumner, Friday, 21 August

Overcast. High 92°, low 64°.

Pressure29.83 inHg
Wind12.8 mph SE
Humidity28%
Visibility—
Dew point47°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Sumner, MT, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.