As of 07:27 MST

Weather in Grantsdale, MT

32°

Grantsdale, Friday, 13 November, 07:27

Overcast. Feels like 32°. High 50°, low 32°.

Pressure29.77 inHg

Wind2.9 mph SW

Humidity82%

Visibility6.2 mi

Dew point28°

See detailed hourly forecast

Monthly outlook for Grantsdale, MT: average high 40.6°, average low 26.3°. That is 0.9° above the climate normal for November. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 6 days and 1.2 inches. The warmest day looks like 15 November (53.5°), the coolest 23 November (16.9°).

40.6°/26.3°

Average high / low

+0.9°

Above normal

6 / 6

Wet days / normal

1.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 November – 22 November	41.3°	40.8°	+0.2°
23 November – 2 December	39.5°	35.7°	+2.1°
3 December – 12 December	at normal	33.3°	—

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).

Sat, 1441° / 27°

41 °

Grantsdale, Saturday, 14 November

Overcast. High 41°, low 27°.

Pressure29.83 inHg

Wind2.3 mph N

Humidity72%

Visibility6.2 mi

Dew point37°

Sun, 1553° / 30°

53 °

Grantsdale, Sunday, 15 November

Overcast. High 53°, low 30°.

Pressure29.88 inHg

Wind5.5 mph SE

Humidity46%

Visibility6.2 mi

Dew point29°

Mon, 1646° / 34°

0.44

46 °

Grantsdale, Monday, 16 November

Rain. High 46°, low 34°.

Pressure29.97 inHg

Wind2 mph SE

Humidity78%

Visibility6.2 mi

Dew point38°

Tue, 1737° / 31°

0.39

37 °

Grantsdale, Tuesday, 17 November

Snow. High 37°, low 31°.

Pressure30.03 inHg

Wind3.2 mph NE

Humidity87%

Visibility—

Dew point33°

Wed, 1838° / 27°

0.01

38 °

Grantsdale, Wednesday, 18 November

Light snow. High 38°, low 27°.

Pressure29.97 inHg

Wind2.1 mph SW

Humidity89%

Visibility—

Dew point30°

Thu, 1936° / 27°

0.24

36 °

Grantsdale, Thursday, 19 November

Snow. High 36°, low 27°.

Pressure30.03 inHg

Wind4.6 mph N

Humidity95%

Visibility—

Dew point33°

Fri, 2036° / 24°

0.06

36 °

Grantsdale, Friday, 20 November

Light snow. High 36°, low 24°.

Pressure29.97 inHg

Wind4.8 mph N

Humidity81%

Visibility—

Dew point30°

Sat, 2136° / 22°

36 °

Grantsdale, Saturday, 21 November

Overcast. High 36°, low 22°.

Pressure30.15 inHg

Wind2.7 mph SW

Humidity82%

Visibility—

Dew point26°

Sun, 2238° / 21°

38 °

Grantsdale, Sunday, 22 November

Clear. High 38°, low 21°.

Pressure30.27 inHg

Wind3.2 mph SW

Humidity73%

Visibility—

Dew point25°

Mon, 2336° / 17°

36 °

Grantsdale, Monday, 23 November

Overcast. High 36°, low 17°.

Pressure30.59 inHg

Wind3.6 mph SW

Humidity71%

Visibility—

Dew point20°

Tue, 2437° / 19°

37 °

Grantsdale, Tuesday, 24 November

Clear. High 37°, low 19°.

Pressure30.42 inHg

Wind2.7 mph SW

Humidity61%

Visibility—

Dew point19°

Wed, 2538° / 26°

0.04

38 °

Grantsdale, Wednesday, 25 November

Light snow. High 38°, low 26°.

Pressure30.21 inHg

Wind4 mph SW

Humidity88%

Visibility—

Dew point29°

Thu, 2643° / 24°

43 °

Grantsdale, Thursday, 26 November

Clear. High 43°, low 24°.

Pressure30.24 inHg

Wind4.8 mph S

Humidity70%

Visibility—

Dew point27°

Fri, 2741° / 29°

41 °

Grantsdale, Friday, 27 November

Light snow. High 41°, low 29°.

Pressure30.06 inHg

Wind5.2 mph S

Humidity75%

Visibility—

Dew point30°

Sat, 2842° / 31°

0.13

42 °

Grantsdale, Saturday, 28 November

Snow. High 42°, low 31°.

Pressure29.88 inHg

Wind5 mph SW

Humidity91%

Visibility—

Dew point37°

From day 17 onward the outlook is built from 60-year climate statistics

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)

Tue, 0831° / 15°

0.07

31 °

Grantsdale, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high31°

Average low15°

Average precipitation0.07 in

Chance of precipitation40%

Record high57° (2020)

Record low-29° (1972)

Wed, 0932° / 16°

0.07

32 °

Grantsdale, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high32°

Average low16°

Average precipitation0.07 in

Chance of precipitation37%

Record high51° (2017)

Record low-33° (1972)

Thu, 1034° / 18°

0.07

34 °

Grantsdale, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high34°

Average low18°

Average precipitation0.07 in

Chance of precipitation38%

Record high56° (2025)

Record low-22° (1972)

Fri, 1133° / 19°

0.06

33 °

Grantsdale, Friday, 11 December

Climate normal for this date — 60-year average.

Average high33°

Average low19°

Average precipitation0.06 in

Chance of precipitation35%

Record high54° (2025)

Record low-17° (1961)

Sat, 1234° / 18°

0.06

34 °

Grantsdale, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high34°

Average low18°

Average precipitation0.06 in

Chance of precipitation42%

Record high55° (2025)

Record low-9° (1961)

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.