10-day forecast for Summit, MT: 22° to 60°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
60°
Best day: Sunday, October 18
41° · 0.2 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1958° / 29°0
Morning31°feels 31°
Afternoon57°feels 54°
Evening40°feels 40°
Overnight33°feels 33°
58 °
Summit, Monday, 19 October
Partly cloudy. High 58°, low 29°.
Pressure29.97 inHg
Wind1.2 mph SW
Humidity42%
Visibility6.2 mi
Dew point32°
Tue, 2055° / 30°0
Morning36°feels 36°
Afternoon55°feels 53°
Evening43°feels 43°
Overnight34°feels 34°
55 °
Summit, Tuesday, 20 October
Light rain. High 55°, low 30°.
Pressure30.06 inHg
Wind2.2 mph NW
Humidity56%
Visibility6.2 mi
Dew point39°
Wed, 2159° / 39°0.02
Morning39°feels 39°
Afternoon59°feels 56°
Evening43°feels 43°
Overnight39°feels 39°
59 °
Summit, Wednesday, 21 October
Light rain. High 59°, low 39°.
Pressure30.03 inHg
Wind0.4 mph NW
Humidity62%
Visibility6.2 mi
Dew point42°
Thu, 2256° / 39°0.01
Morning43°feels 43°
Afternoon56°feels 54°
Evening49°feels 47°
Overnight40°feels 40°
56 °
Summit, Thursday, 22 October
Light rain. High 56°, low 39°.
Pressure29.77 inHg
Wind7.2 mph S
Humidity55%
Visibility6.2 mi
Dew point41°
Fri, 2341° / 29°0.2
Morning38°feels 35°
Afternoon36°feels 31°
Evening34°feels 26°
Overnight31°feels 24°
41 °
Summit, Friday, 23 October
Light rain. High 41°, low 29°.
Pressure29.85 inHg
Wind13.4 mph W
Humidity94%
Visibility—
Dew point35°
Sat, 2441° / 22°0
Morning26°feels 20°
Afternoon34°feels 29°
Evening34°feels 28°
Overnight27°feels 20°
41 °
Summit, Saturday, 24 October
Overcast. High 41°, low 22°.
Pressure30.24 inHg
Wind7.4 mph S
Humidity37%
Visibility—
Dew point9°
Sun, 2547° / 26°0
Morning31°feels 24°
Afternoon43°feels 38°
Evening38°feels 33°
Overnight30°feels 24°
47 °
Summit, Sunday, 25 October
Clear. High 47°, low 26°.
Pressure30.00 inHg
Wind9.6 mph S
Humidity29%
Visibility—
Dew point11°
Mon, 2644° / 23°0
Morning27°feels 22°
Afternoon36°feels 31°
Evening34°feels 29°
Overnight28°feels 23°
44 °
Summit, Monday, 26 October
Mostly clear. High 44°, low 23°.
Pressure30.03 inHg
Wind6 mph E
Humidity51%
Visibility—
Dew point18°
Tue, 2752° / 27°0
Morning34°feels 30°
Afternoon49°feels 46°
Evening44°feels 41°
Overnight34°feels 30°
52 °
Summit, Tuesday, 27 October
Overcast. High 52°, low 27°.
Pressure29.80 inHg
Wind14.2 mph S
Humidity29%
Visibility—
Dew point16°
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 Summit, 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.