As of 14:11 MDT

Weather in Grant, MT

34°

Grant, Sunday, 11 October, 14:11

Snow. Feels like 34°. High 38°, low 27°.

Pressure29.83 inHg

Wind2.6 mph E

Humidity94%

Visibility1.3 mi

Dew point33°

See detailed hourly forecast

Monthly outlook for Grant, MT: average high 53.7°, average low 33.7°. That is 4° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 17 October (65.8°), the coolest 14 October (22.4°).

53.7°/33.7°

Average high / low

+4°

Above normal

2 / 4

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 October – 20 October	50.4°	47.6°	+1.6°
21 October – 30 October	59.2°	42.8°	+9.1°
31 October – 9 November	at normal	37.4°	—

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).

Mon, 1232° / 26°

0.07

32 °

Grant, Monday, 12 October

Light snow. High 32°, low 26°.

Pressure30.06 inHg

Wind1.5 mph NE

Humidity97%

Visibility3.0 mi

Dew point27°

Tue, 1336° / 23°

36 °

Grant, Tuesday, 13 October

Overcast. High 36°, low 23°.

Pressure30.21 inHg

Wind1.9 mph SE

Humidity98%

Visibility1.6 mi

Dew point28°

Wed, 1445° / 22°

45 °

Grant, Wednesday, 14 October

Clear. High 45°, low 22°.

Pressure30.27 inHg

Wind1.5 mph SE

Humidity76%

Visibility0.1 mi

Dew point26°

Thu, 1550° / 27°

50 °

Grant, Thursday, 15 October

Clear. High 50°, low 27°.

Pressure30.56 inHg

Wind1.2 mph SW

Humidity60%

Visibility6.2 mi

Dew point30°

Fri, 1657° / 34°

57 °

Grant, Friday, 16 October

Clear. High 57°, low 34°.

Pressure30.50 inHg

Wind3.4 mph NE

Humidity57%

Visibility—

Dew point31°

Sat, 1766° / 40°

66 °

Grant, Saturday, 17 October

Overcast. High 66°, low 40°.

Pressure30.12 inHg

Wind10.3 mph SW

Humidity37%

Visibility—

Dew point30°

Sun, 1865° / 45°

65 °

Grant, Sunday, 18 October

Partly cloudy. High 65°, low 45°.

Pressure29.97 inHg

Wind18.1 mph SW

Humidity24%

Visibility—

Dew point24°

Mon, 1963° / 45°

63 °

Grant, Monday, 19 October

Overcast. High 63°, low 45°.

Pressure29.85 inHg

Wind17.9 mph W

Humidity26%

Visibility—

Dew point24°

Tue, 2052° / 38°

52 °

Grant, Tuesday, 20 October

Clear. High 52°, low 38°.

Pressure30.00 inHg

Wind8.7 mph W

Humidity53%

Visibility—

Dew point29°

Wed, 2151° / 34°

51 °

Grant, Wednesday, 21 October

Overcast. High 51°, low 34°.

Pressure30.06 inHg

Wind5.1 mph S

Humidity39%

Visibility—

Dew point21°

Thu, 2255° / 33°

55 °

Grant, Thursday, 22 October

Clear. High 55°, low 33°.

Pressure30.12 inHg

Wind8 mph SW

Humidity26%

Visibility—

Dew point13°

Fri, 2362° / 35°

62 °

Grant, Friday, 23 October

Clear. High 62°, low 35°.

Pressure30.00 inHg

Wind12 mph SW

Humidity23%

Visibility—

Dew point16°

Sat, 2462° / 38°

62 °

Grant, Saturday, 24 October

Partly cloudy. High 62°, low 38°.

Pressure30.03 inHg

Wind11.4 mph W

Humidity27%

Visibility—

Dew point20°

Sun, 2560° / 34°

60 °

Grant, Sunday, 25 October

Overcast. High 60°, low 34°.

Pressure30.33 inHg

Wind6.3 mph W

Humidity24%

Visibility—

Dew point13°

Mon, 2664° / 40°

64 °

Grant, Monday, 26 October

Partly cloudy. High 64°, low 40°.

Pressure30.06 inHg

Wind9.1 mph W

Humidity20%

Visibility—

Dew point15°

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

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)

Sat, 0737° / 19°

0.04

37 °

Grant, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high37°

Average low19°

Average precipitation0.04 in

Chance of precipitation32%

Record high55° (1999)

Record low-10° (2000)

Sun, 0835° / 18°

0.07

35 °

Grant, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high35°

Average low18°

Average precipitation0.07 in

Chance of precipitation38%

Record high53° (2016)

Record low-15° (1994)

Mon, 0935° / 17°

0.06

35 °

Grant, Monday, 9 November

Climate normal for this date — 60-year average.

Average high35°

Average low17°

Average precipitation0.06 in

Chance of precipitation27%

Record high55° (2016)

Record low-6° (2005)

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.