As of 18:26 MDT

Weather in Grant, MT

69°

Grant, Thursday, 8 October, 18:26

Clear. Feels like 66°. High 70°, low 35°.

Pressure29.91 inHg

Wind4.4 mph SW

Humidity21%

Visibility6.2 mi

Dew point28°

See detailed hourly forecast

Monthly outlook for Grant, MT: average high 52.5°, average low 32.5°. That is 2.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 9 October (76.2°), the coolest 16 October (18.8°).

52.5°/32.5°

Average high / low

+2.6°

Above normal

4 / 4

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	50°	48.5°	+0.8°
18 October – 27 October	56.8°	45.3°	+6.4°
28 October – 6 November	at normal	38.6°	—

October records over 66 years

73.8°2 October 2010All-time high

-16.8°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Chinatown (11 mi).

Fri, 0976° / 36°

76 °

Grant, Friday, 9 October

Partly cloudy. High 76°, low 36°.

Pressure29.68 inHg

Wind8.4 mph SW

Humidity25%

Visibility6.2 mi

Dew point31°

Sat, 1063° / 38°

0.08

63 °

Grant, Saturday, 10 October

Light rain. High 63°, low 38°.

Pressure29.50 inHg

Wind6.8 mph E

Humidity50%

Visibility4.5 mi

Dew point39°

Sun, 1139° / 31°

0.39

39 °

Grant, Sunday, 11 October

Snow. High 39°, low 31°.

Pressure29.97 inHg

Wind5.7 mph E

Humidity97%

Visibility1.7 mi

Dew point30°

Mon, 1238° / 31°

0.03

38 °

Grant, Monday, 12 October

Snow. High 38°, low 31°.

Pressure30.00 inHg

Wind2 mph E

Humidity94%

Visibility6.2 mi

Dew point30°

Tue, 1353° / 31°

0.01

53 °

Grant, Tuesday, 13 October

Light rain. High 53°, low 31°.

Pressure30.00 inHg

Wind3.2 mph NW

Humidity80%

Visibility—

Dew point36°

Wed, 1439° / 32°

0.04

39 °

Grant, Wednesday, 14 October

Snow. High 39°, low 32°.

Pressure29.83 inHg

Wind16.2 mph NW

Humidity72%

Visibility—

Dew point29°

Thu, 1535° / 24°

0.05

35 °

Grant, Thursday, 15 October

Snow. High 35°, low 24°.

Pressure30.45 inHg

Wind20.3 mph NE

Humidity65%

Visibility—

Dew point22°

Fri, 1636° / 19°

36 °

Grant, Friday, 16 October

Partly cloudy. High 36°, low 19°.

Pressure30.65 inHg

Wind6.6 mph NE

Humidity58%

Visibility—

Dew point15°

Sat, 1751° / 24°

51 °

Grant, Saturday, 17 October

Clear. High 51°, low 24°.

Pressure30.30 inHg

Wind4.8 mph NE

Humidity43%

Visibility—

Dew point19°

Sun, 1853° / 36°

0.01

53 °

Grant, Sunday, 18 October

Light rain. High 53°, low 36°.

Pressure30.03 inHg

Wind5.3 mph S

Humidity55%

Visibility—

Dew point33°

Mon, 1949° / 37°

0.01

49 °

Grant, Monday, 19 October

Light rain. High 49°, low 37°.

Pressure30.15 inHg

Wind10.2 mph W

Humidity59%

Visibility—

Dew point31°

Tue, 2058° / 34°

58 °

Grant, Tuesday, 20 October

Clear. High 58°, low 34°.

Pressure30.18 inHg

Wind5.9 mph W

Humidity42%

Visibility—

Dew point26°

Wed, 2160° / 37°

60 °

Grant, Wednesday, 21 October

Overcast. High 60°, low 37°.

Pressure30.15 inHg

Wind4.7 mph SW

Humidity37%

Visibility—

Dew point25°

Thu, 2261° / 37°

61 °

Grant, Thursday, 22 October

Clear. High 61°, low 37°.

Pressure30.12 inHg

Wind5.6 mph S

Humidity30%

Visibility—

Dew point22°

Fri, 2359° / 38°

0.04

59 °

Grant, Friday, 23 October

Light rain. High 59°, low 38°.

Pressure30.00 inHg

Wind5.2 mph S

Humidity32%

Visibility—

Dew point22°

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

Sat, 2444° / 25°

0.04

44 °

Grant, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.04 in

Chance of precipitation25%

Record high60° (2005)

Record low7° (2020)

Sun, 2544° / 25°

0.05

44 °

Grant, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.05 in

Chance of precipitation23%

Record high59° (2005)

Record low-8° (2020)

Mon, 2643° / 24°

0.07

43 °

Grant, Monday, 26 October

Climate normal for this date — 60-year average.

Average high43°

Average low24°

Average precipitation0.07 in

Chance of precipitation35%

Record high59° (1999)

Record low-10° (2020)

Tue, 2742° / 23°

0.04

42 °

Grant, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high42°

Average low23°

Average precipitation0.04 in

Chance of precipitation23%

Record high58° (2024)

Record low-10° (1996)

Wed, 2841° / 23°

0.07

41 °

Grant, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high41°

Average low23°

Average precipitation0.07 in

Chance of precipitation32%

Record high58° (1962)

Record low-2° (2019)

Thu, 2939° / 22°

0.05

39 °

Grant, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high39°

Average low22°

Average precipitation0.05 in

Chance of precipitation32%

Record high60° (1962)

Record low-12° (2019)

Fri, 3038° / 21°

0.04

38 °

Grant, Friday, 30 October

Climate normal for this date — 60-year average.

Average high38°

Average low21°

Average precipitation0.04 in

Chance of precipitation25%

Record high60° (1962)

Record low-17° (1991)

Sat, 3138° / 21°

0.04

38 °

Grant, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high38°

Average low21°

Average precipitation0.04 in

Chance of precipitation25%

Record high56° (1988)

Record low-7° (2002)

Sun, 0138° / 21°

0.05

38 °

Grant, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high38°

Average low21°

Average precipitation0.05 in

Chance of precipitation25%

Record high56° (2025)

Record low-13° (1989)

Mon, 0238° / 20°

0.04

38 °

Grant, Monday, 2 November

Climate normal for this date — 60-year average.

Average high38°

Average low20°

Average precipitation0.04 in

Chance of precipitation35%

Record high58° (2020)

Record low-18° (1991)

Tue, 0339° / 21°

0.03

39 °

Grant, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high39°

Average low21°

Average precipitation0.03 in

Chance of precipitation17%

Record high58° (2020)

Record low-14° (1991)

Wed, 0439° / 21°

0.04

39 °

Grant, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high39°

Average low21°

Average precipitation0.04 in

Chance of precipitation33%

Record high53° (2001)

Record low-15° (1973)

Thu, 0538° / 21°

0.05

38 °

Grant, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high38°

Average low21°

Average precipitation0.05 in

Chance of precipitation38%

Record high56° (2020)

Record low-16° (1961)

Fri, 0637° / 20°

0.04

37 °

Grant, Friday, 6 November

Climate normal for this date — 60-year average.

Average high37°

Average low20°

Average precipitation0.04 in

Chance of precipitation28%

Record high55° (2012)

Record low-14° (1971)

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 Grant, 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 Grant, 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.