10-day forecast for Summit, MT: 23° to 60°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
60°
Best day: Monday, October 26
46° · 0.17 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1853° / 24°0
Morning24°feels 24°
Afternoon49°feels 49°
Evening35°feels 35°
Overnight27°feels 23°
53 °
Summit, Sunday, 18 October
Mostly clear. High 53°, low 24°.
Pressure30.12 inHg
Wind2.2 mph NW
Humidity50%
Visibility6.2 mi
Dew point33°
Mon, 1959° / 25°0
Morning33°feels 33°
Afternoon58°feels 56°
Evening41°feels 41°
Overnight28°feels 28°
59 °
Summit, Monday, 19 October
Partly cloudy. High 59°, low 25°.
Pressure29.97 inHg
Wind1.3 mph SW
Humidity40%
Visibility6.2 mi
Dew point32°
Tue, 2056° / 35°0
Morning36°feels 36°
Afternoon56°feels 53°
Evening44°feels 44°
Overnight35°feels 35°
56 °
Summit, Tuesday, 20 October
Overcast. High 56°, low 35°.
Pressure30.06 inHg
Wind2 mph NW
Humidity48%
Visibility6.2 mi
Dew point35°
Wed, 2158° / 38°0.02
Morning40°feels 40°
Afternoon57°feels 54°
Evening51°feels 49°
Overnight40°feels 40°
58 °
Summit, Wednesday, 21 October
Light rain. High 58°, low 38°.
Pressure30.06 inHg
Wind2.3 mph W
Humidity58%
Visibility6.2 mi
Dew point41°
Thu, 2259° / 39°0
Morning45°feels 44°
Afternoon56°feels 54°
Evening51°feels 48°
Overnight42°feels 40°
59 °
Summit, Thursday, 22 October
Overcast. High 59°, low 39°.
Pressure29.91 inHg
Wind9.4 mph S
Humidity53%
Visibility—
Dew point38°
Fri, 2346° / 38°0.17
Morning40°feels 37°
Afternoon45°feels 40°
Evening40°feels 35°
Overnight39°feels 35°
46 °
Summit, Friday, 23 October
Light rain. High 46°, low 38°.
Pressure29.91 inHg
Wind10.6 mph N
Humidity60%
Visibility—
Dew point32°
Sat, 2451° / 34°0
Morning38°feels 37°
Afternoon45°feels 45°
Evening46°feels 44°
Overnight39°feels 35°
51 °
Summit, Saturday, 24 October
Partly cloudy. High 51°, low 34°.
Pressure30.06 inHg
Wind6.3 mph W
Humidity56%
Visibility—
Dew point29°
Sun, 2555° / 34°0
Morning38°feels 35°
Afternoon49°feels 49°
Evening47°feels 46°
Overnight39°feels 36°
55 °
Summit, Sunday, 25 October
Clear. High 55°, low 34°.
Pressure30.12 inHg
Wind6 mph S
Humidity40%
Visibility—
Dew point24°
Mon, 2660° / 35°0
Morning40°feels 36°
Afternoon53°feels 49°
Evening50°feels 46°
Overnight40°feels 36°
60 °
Summit, Monday, 26 October
Clear. High 60°, low 35°.
Pressure29.97 inHg
Wind5.6 mph S
Humidity19%
Visibility—
Dew point10°
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.