10-day forecast for Grannis, MT: 26° to 69°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
69°
Best day: Thursday, October 22
52° · 1.37 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 2064° / 40°0
Morning41°feels 41°
Afternoon63°feels 60°
Evening54°feels 52°
Overnight44°feels 44°
64 °
Grannis, Tuesday, 20 October
Overcast. High 64°, low 40°.
Pressure30.06 inHg
Wind1.7 mph NW
Humidity32%
Visibility6.2 mi
Dew point29°
Wed, 2165° / 39°0.01
Morning39°feels 39°
Afternoon64°feels 62°
Evening52°feels 51°
Overnight41°feels 39°
65 °
Grannis, Wednesday, 21 October
Light rain. High 65°, low 39°.
Pressure30.06 inHg
Wind2.9 mph SE
Humidity51%
Visibility6.2 mi
Dew point39°
Thu, 2269° / 45°0
Morning45°feels 45°
Afternoon68°feels 66°
Evening57°feels 55°
Overnight48°feels 48°
69 °
Grannis, Thursday, 22 October
Partly cloudy. High 69°, low 45°.
Pressure29.88 inHg
Wind2.4 mph SE
Humidity42%
Visibility6.2 mi
Dew point40°
Fri, 2352° / 40°1.37
Morning47°feels 46°
Afternoon47°feels 42°
Evening41°feels 37°
Overnight50°feels 48°
52 °
Grannis, Friday, 23 October
Rain. High 52°, low 40°.
Pressure29.68 inHg
Wind9.6 mph SW
Humidity91%
Visibility—
Dew point45°
Sat, 2451° / 33°0.02
Morning37°feels 35°
Afternoon46°feels 44°
Evening45°feels 43°
Overnight38°feels 37°
51 °
Grannis, Saturday, 24 October
Light rain. High 51°, low 33°.
Pressure30.21 inHg
Wind7.2 mph N
Humidity58%
Visibility—
Dew point30°
Sun, 2563° / 34°0
Morning40°feels 36°
Afternoon55°feels 51°
Evening53°feels 50°
Overnight42°feels 38°
63 °
Grannis, Sunday, 25 October
Clear. High 63°, low 34°.
Pressure30.18 inHg
Wind9.9 mph SW
Humidity30%
Visibility—
Dew point21°
Mon, 2646° / 34°0
Morning40°feels 34°
Afternoon45°feels 40°
Evening40°feels 34°
Overnight35°feels 29°
46 °
Grannis, Monday, 26 October
Overcast. High 46°, low 34°.
Pressure30.18 inHg
Wind10.1 mph E
Humidity44%
Visibility—
Dew point24°
Tue, 2743° / 26°0
Morning29°feels 28°
Afternoon37°feels 33°
Evening38°feels 35°
Overnight31°feels 31°
43 °
Grannis, Tuesday, 27 October
Clear. High 43°, low 26°.
Pressure30.47 inHg
Wind5.6 mph E
Humidity59%
Visibility—
Dew point22°
Wed, 2852° / 30°0
Morning34°feels 31°
Afternoon45°feels 44°
Evening42°feels 40°
Overnight36°feels 35°
52 °
Grannis, Wednesday, 28 October
Clear. High 52°, low 30°.
Pressure30.21 inHg
Wind5.7 mph E
Humidity33%
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 Grannis, 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.