Monthly outlook for Grantsdale, MT: average high 51°, average low 31.6°. That is 5.2° above the climate normal for November. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 14 November (62.6°), the coolest 20 November (18.8°).
51°/31.6°
Average high / low
+5.2°
Above normal
2 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 November – 17 November
56.2°
43.3°
+7.1°
18 November – 27 November
42.4°
37.7°
+2.6°
28 November – 7 December
at normal
34.5°
—
November records over 66 years
69.4°1 November 2025All-time high
-17°23 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Corvallis (8 mi).
Mon, 0955° / 31°0
55 °
Grantsdale, Monday, 9 November
Light rain. High 55°, low 31°.
Pressure30.06 inHg
Wind1.2 mph E
Humidity52%
Visibility6.2 mi
Dew point36°
Tue, 1053° / 38°0.01
53 °
Grantsdale, Tuesday, 10 November
Light rain. High 53°, low 38°.
Pressure30.21 inHg
Wind4.7 mph SW
Humidity50%
Visibility6.2 mi
Dew point35°
Wed, 1161° / 36°0
61 °
Grantsdale, Wednesday, 11 November
Overcast. High 61°, low 36°.
Pressure30.18 inHg
Wind4.5 mph S
Humidity47%
Visibility6.2 mi
Dew point37°
Thu, 1262° / 38°0
62 °
Grantsdale, Thursday, 12 November
Overcast. High 62°, low 38°.
Pressure29.97 inHg
Wind0.6 mph SE
Humidity46%
Visibility6.2 mi
Dew point36°
Fri, 1362° / 35°0
62 °
Grantsdale, Friday, 13 November
Partly cloudy. High 62°, low 35°.
Pressure29.68 inHg
Wind10.9 mph S
Humidity40%
Visibility—
Dew point29°
Sat, 1463° / 45°0
63 °
Grantsdale, Saturday, 14 November
Overcast. High 63°, low 45°.
Pressure29.68 inHg
Wind6.3 mph S
Humidity38%
Visibility—
Dew point29°
Sun, 1558° / 42°0
58 °
Grantsdale, Sunday, 15 November
Overcast. High 58°, low 42°.
Pressure29.74 inHg
Wind7.9 mph S
Humidity36%
Visibility—
Dew point26°
Mon, 1653° / 38°0.34
53 °
Grantsdale, Monday, 16 November
Snow. High 53°, low 38°.
Pressure29.53 inHg
Wind6.2 mph NW
Humidity45%
Visibility—
Dew point31°
Tue, 1741° / 26°0.07
41 °
Grantsdale, Tuesday, 17 November
Light snow. High 41°, low 26°.
Pressure30.03 inHg
Wind6.4 mph W
Humidity58%
Visibility—
Dew point25°
Wed, 1839° / 22°0
39 °
Grantsdale, Wednesday, 18 November
Clear. High 39°, low 22°.
Pressure30.27 inHg
Wind3.5 mph SE
Humidity63%
Visibility—
Dew point22°
Thu, 1939° / 20°0
39 °
Grantsdale, Thursday, 19 November
Clear. High 39°, low 20°.
Pressure30.33 inHg
Wind3.1 mph S
Humidity53%
Visibility—
Dew point16°
Fri, 2037° / 19°0
37 °
Grantsdale, Friday, 20 November
Partly cloudy. High 37°, low 19°.
Pressure30.39 inHg
Wind2.8 mph SW
Humidity50%
Visibility—
Dew point14°
Sat, 2144° / 24°0
44 °
Grantsdale, Saturday, 21 November
Partly cloudy. High 44°, low 24°.
Pressure30.30 inHg
Wind2.8 mph SW
Humidity64%
Visibility—
Dew point25°
Sun, 2248° / 28°0
48 °
Grantsdale, Sunday, 22 November
Partly cloudy. High 48°, low 28°.
Pressure30.30 inHg
Wind4.7 mph S
Humidity65%
Visibility—
Dew point29°
Mon, 2347° / 30°0
47 °
Grantsdale, Monday, 23 November
Overcast. High 47°, low 30°.
Pressure29.91 inHg
Wind4.6 mph S
Humidity56%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2437° / 21°0.11
37 °
Grantsdale, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.11 in
Chance of precipitation53%
Record high54° (1976)
Record low-13° (2010)
Wed, 2536° / 20°0.14
36 °
Grantsdale, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.14 in
Chance of precipitation53%
Record high51° (2017)
Record low-17° (1993)
Thu, 2635° / 19°0.07
35 °
Grantsdale, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.07 in
Chance of precipitation35%
Record high55° (2017)
Record low-9° (1993)
Fri, 2735° / 19°0.06
35 °
Grantsdale, Friday, 27 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.06 in
Chance of precipitation42%
Record high54° (2021)
Record low-7° (2015)
Sat, 2836° / 20°0.08
36 °
Grantsdale, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.08 in
Chance of precipitation38%
Record high61° (2021)
Record low-7° (1979)
Sun, 2935° / 19°0.07
35 °
Grantsdale, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.07 in
Chance of precipitation38%
Record high48° (2021)
Record low-7° (1979)
Mon, 3035° / 18°0.06
35 °
Grantsdale, Monday, 30 November
Climate normal for this date — 60-year average.
Average high35°
Average low18°
Average precipitation0.06 in
Chance of precipitation35%
Record high50° (2021)
Record low-11° (1985)
Tue, 0135° / 19°0.09
35 °
Grantsdale, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.09 in
Chance of precipitation42%
Record high62° (2021)
Record low-6° (1985)
Wed, 0235° / 20°0.14
35 °
Grantsdale, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.14 in
Chance of precipitation43%
Record high55° (2021)
Record low-5° (2009)
Thu, 0335° / 19°0.08
35 °
Grantsdale, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.08 in
Chance of precipitation38%
Record high53° (2021)
Record low-11° (2009)
Fri, 0434° / 17°0.09
34 °
Grantsdale, Friday, 4 December
Climate normal for this date — 60-year average.
Average high34°
Average low17°
Average precipitation0.09 in
Chance of precipitation35%
Record high54° (2021)
Record low-16° (1972)
Sat, 0534° / 17°0.06
34 °
Grantsdale, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high34°
Average low17°
Average precipitation0.06 in
Chance of precipitation32%
Record high59° (2023)
Record low-28° (1972)
Sun, 0633° / 17°0.08
33 °
Grantsdale, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high33°
Average low17°
Average precipitation0.08 in
Chance of precipitation37%
Record high58° (2023)
Record low-18° (2013)
Mon, 0732° / 16°0.07
32 °
Grantsdale, Monday, 7 December
Climate normal for this date — 60-year average.
Average high32°
Average low16°
Average precipitation0.07 in
Chance of precipitation42%
Record high52° (2020)
Record low-18° (2009)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grantsdale, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Grantsdale, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.