As of 03:04 MST

Weather in Grantsdale, MT

31°

Grantsdale, Thursday, 5 November, 03:04

Clear. Feels like 31°. High 38°, low 29°.

Pressure30.15 inHg

Wind2.4 mph SW

Humidity92%

Visibility6.2 mi

Dew point29°

See detailed hourly forecast

Monthly outlook for Grantsdale, MT: average high 54.5°, average low 35.6°. That is 6.2° above the climate normal for November. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 12 November (65.2°), the coolest 6 November (25.5°).

54.5°/35.6°

Average high / low

+6.2°

Above normal

0 / 6

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
5 November – 14 November	55.6°	44.6°	+6.1°
15 November – 24 November	52.7°	39.7°	+7.2°
25 November – 4 December	at normal	35.2°	—

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).

Fri, 0645° / 26°

45 °

Grantsdale, Friday, 6 November

Overcast. High 45°, low 26°.

Pressure30.18 inHg

Wind3.7 mph S

Humidity47%

Visibility6.2 mi

Dew point29°

Sat, 0759° / 34°

59 °

Grantsdale, Saturday, 7 November

Light rain. High 59°, low 34°.

Pressure30.15 inHg

Wind3.6 mph SE

Humidity43%

Visibility6.2 mi

Dew point34°

Sun, 0854° / 38°

0.03

54 °

Grantsdale, Sunday, 8 November

Light rain. High 54°, low 38°.

Pressure30.09 inHg

Wind5.7 mph NW

Humidity53%

Visibility6.2 mi

Dew point34°

Mon, 0950° / 31°

50 °

Grantsdale, Monday, 9 November

Light rain. High 50°, low 31°.

Pressure30.21 inHg

Wind3.4 mph SW

Humidity73%

Visibility—

Dew point33°

Tue, 1060° / 36°

60 °

Grantsdale, Tuesday, 10 November

Overcast. High 60°, low 36°.

Pressure30.03 inHg

Wind6.9 mph S

Humidity56%

Visibility—

Dew point35°

Wed, 1162° / 40°

62 °

Grantsdale, Wednesday, 11 November

Clear. High 62°, low 40°.

Pressure30.18 inHg

Wind3.3 mph SE

Humidity40%

Visibility—

Dew point29°

Thu, 1265° / 43°

65 °

Grantsdale, Thursday, 12 November

Clear. High 65°, low 43°.

Pressure30.15 inHg

Wind4.1 mph W

Humidity32%

Visibility—

Dew point27°

Fri, 1362° / 42°

62 °

Grantsdale, Friday, 13 November

Mostly clear. High 62°, low 42°.

Pressure30.03 inHg

Wind3.4 mph SW

Humidity32%

Visibility—

Dew point25°

Sat, 1461° / 38°

61 °

Grantsdale, Saturday, 14 November

Clear. High 61°, low 38°.

Pressure29.77 inHg

Wind3.5 mph S

Humidity35%

Visibility—

Dew point24°

Sun, 1556° / 38°

56 °

Grantsdale, Sunday, 15 November

Overcast. High 56°, low 38°.

Pressure29.56 inHg

Wind4.1 mph S

Humidity50%

Visibility—

Dew point31°

Mon, 1647° / 40°

0.02

47 °

Grantsdale, Monday, 16 November

Light rain. High 47°, low 40°.

Pressure29.83 inHg

Wind4.9 mph SW

Humidity79%

Visibility—

Dew point39°

Tue, 1751° / 36°

51 °

Grantsdale, Tuesday, 17 November

Overcast. High 51°, low 36°.

Pressure30.09 inHg

Wind3.5 mph S

Humidity52%

Visibility—

Dew point29°

Wed, 1855° / 33°

55 °

Grantsdale, Wednesday, 18 November

Overcast. High 55°, low 33°.

Pressure30.12 inHg

Wind2.9 mph S

Humidity46%

Visibility—

Dew point26°

Thu, 1951° / 32°

51 °

Grantsdale, Thursday, 19 November

Clear. High 51°, low 32°.

Pressure30.36 inHg

Wind2.6 mph N

Humidity47%

Visibility—

Dew point25°

Fri, 2056° / 36°

56 °

Grantsdale, Friday, 20 November

Overcast. High 56°, low 36°.

Pressure30.30 inHg

Wind3.5 mph SW

Humidity37%

Visibility—

Dew point22°

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

Sat, 2139° / 21°

0.06

39 °

Grantsdale, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high39°

Average low21°

Average precipitation0.06 in

Chance of precipitation33%

Record high55° (2018)

Record low-8° (1977)

Sun, 2238° / 20°

0.08

38 °

Grantsdale, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high38°

Average low20°

Average precipitation0.08 in

Chance of precipitation42%

Record high57° (2021)

Record low-12° (2007)

Mon, 2337° / 19°

0.06

37 °

Grantsdale, Monday, 23 November

Climate normal for this date — 60-year average.

Average high37°

Average low19°

Average precipitation0.06 in

Chance of precipitation38%

Record high61° (2017)

Record low-17° (1985)

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)

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.