10-day forecast for Summit, MT: 20° to 60°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
58°
Best day: Tuesday, October 20
50° · 0.55 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Wed, 2159° / 29°0.02
Morning30°feels 30°
Afternoon56°feels 54°
Evening44°feels 44°
Overnight32°feels 32°
59 °
Summit, Wednesday, 21 October
Light rain. High 59°, low 29°.
Pressure30.06 inHg
Wind2.3 mph W
Humidity54%
Visibility6.2 mi
Dew point40°
Thu, 2260° / 38°0.06
Morning38°feels 38°
Afternoon60°feels 57°
Evening47°feels 47°
Overnight39°feels 39°
60 °
Summit, Thursday, 22 October
Light rain. High 60°, low 38°.
Pressure29.94 inHg
Wind2.4 mph SW
Humidity56%
Visibility6.2 mi
Dew point42°
Fri, 2350° / 32°0.55
Morning43°feels 43°
Afternoon49°feels 47°
Evening35°feels 32°
Overnight43°feels 43°
50 °
Summit, Friday, 23 October
Snow. High 50°, low 32°.
Pressure29.74 inHg
Wind1.5 mph S
Humidity70%
Visibility6.2 mi
Dew point40°
Sat, 2440° / 28°0.17
Morning30°feels 30°
Afternoon35°feels 35°
Evening36°feels 36°
Overnight29°feels 29°
40 °
Summit, Saturday, 24 October
Snow. High 40°, low 28°.
Pressure30.30 inHg
Wind4.2 mph E
Humidity84%
Visibility—
Dew point29°
Sun, 2549° / 29°0
Morning34°feels 33°
Afternoon41°feels 39°
Evening42°feels 39°
Overnight34°feels 30°
49 °
Summit, Sunday, 25 October
Clear. High 49°, low 29°.
Pressure30.24 inHg
Wind6.2 mph S
Humidity60%
Visibility—
Dew point27°
Mon, 2650° / 30°0
Morning35°feels 32°
Afternoon44°feels 43°
Evening36°feels 31°
Overnight30°feels 25°
50 °
Summit, Monday, 26 October
Mostly clear. High 50°, low 30°.
Pressure30.18 inHg
Wind6.2 mph NE
Humidity28%
Visibility—
Dew point12°
Tue, 2738° / 20°0
Morning23°feels 18°
Afternoon32°feels 27°
Evening31°feels 28°
Overnight25°feels 24°
38 °
Summit, Tuesday, 27 October
Overcast. High 38°, low 20°.
Pressure30.42 inHg
Wind5.8 mph NE
Humidity50%
Visibility—
Dew point14°
Wed, 2852° / 26°0
Morning33°feels 29°
Afternoon46°feels 44°
Evening43°feels 40°
Overnight34°feels 30°
52 °
Summit, Wednesday, 28 October
Overcast. High 52°, low 26°.
Pressure30.09 inHg
Wind5.4 mph S
Humidity32%
Visibility—
Dew point15°
Thu, 2954° / 33°0
Morning37°feels 33°
Afternoon48°feels 45°
Evening44°feels 41°
Overnight36°feels 31°
54 °
Summit, Thursday, 29 October
Overcast. High 54°, low 33°.
Pressure29.91 inHg
Wind6.9 mph SW
Humidity29%
Visibility—
Dew point15°
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.