10-day forecast for Keystone, MT: 24° to 49°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
47°
Best day: Friday, November 6
39° · 0.4 in
Worst day: Sunday, November 1
Tap any day below to see morning, afternoon, evening and overnight.
Thu, 2939° / 24°0.02
Morning24°feels 24°
Afternoon37°feels 37°
Evening30°feels 30°
Overnight28°feels 28°
39 °
Keystone, Thursday, 29 October
Light rain. High 39°, low 24°.
Pressure30.15 inHg
Wind1.9 mph NE
Humidity94%
Visibility4.4 mi
Dew point34°
Fri, 3046° / 26°0
Morning27°feels 27°
Afternoon44°feels 44°
Evening36°feels 36°
Overnight26°feels 26°
46 °
Keystone, Friday, 30 October
Partly cloudy. High 46°, low 26°.
Pressure30.00 inHg
Wind2.4 mph NE
Humidity68%
Visibility6.2 mi
Dew point31°
Sat, 3149° / 26°0.02
Morning26°feels 26°
Afternoon47°feels 47°
Evening39°feels 39°
Overnight30°feels 30°
49 °
Keystone, Saturday, 31 October
Light rain. High 49°, low 26°.
Pressure30.06 inHg
Wind1.3 mph N
Humidity72%
Visibility6.2 mi
Dew point34°
Sun, 0139° / 31°0.4
Morning35°feels 35°
Afternoon37°feels 34°
Evening37°feels 33°
Overnight35°feels 35°
39 °
Keystone, Sunday, 1 November
Light rain. High 39°, low 31°.
Pressure29.97 inHg
Wind4 mph W
Humidity97%
Visibility3.7 mi
Dew point39°
Mon, 0243° / 25°0
Morning28°feels 28°
Afternoon37°feels 37°
Evening36°feels 36°
Overnight26°feels 26°
43 °
Keystone, Monday, 2 November
Mostly clear. High 43°, low 25°.
Pressure30.50 inHg
Wind1.7 mph E
Humidity72%
Visibility—
Dew point27°
Tue, 0345° / 25°0
Morning30°feels 30°
Afternoon38°feels 38°
Evening34°feels 34°
Overnight29°feels 29°
45 °
Keystone, Tuesday, 3 November
Overcast. High 45°, low 25°.
Pressure30.30 inHg
Wind2.9 mph E
Humidity53%
Visibility—
Dew point22°
Wed, 0444° / 26°0
Morning30°feels 30°
Afternoon38°feels 38°
Evening34°feels 34°
Overnight28°feels 28°
44 °
Keystone, Wednesday, 4 November
Overcast. High 44°, low 26°.
Pressure30.09 inHg
Wind2.2 mph SE
Humidity57%
Visibility—
Dew point23°
Thu, 0544° / 27°0
Morning31°feels 31°
Afternoon39°feels 39°
Evening36°feels 36°
Overnight31°feels 31°
44 °
Keystone, Thursday, 5 November
Overcast. High 44°, low 27°.
Pressure29.97 inHg
Wind2.6 mph NW
Humidity62%
Visibility—
Dew point26°
Fri, 0647° / 26°0
Morning31°feels 31°
Afternoon41°feels 41°
Evening37°feels 37°
Overnight29°feels 29°
47 °
Keystone, Friday, 6 November
Overcast. High 47°, low 26°.
Pressure30.00 inHg
Wind2.9 mph SE
Humidity52%
Visibility—
Dew point23°
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 Keystone, 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.