As of 07:08 MDT

Weather in Grant, MT

42°

Grant, Saturday, 10 October, 07:08

Partly cloudy. Feels like 42°. High 60°, low 41°.

Pressure29.53 inHg

Wind2.5 mph NW

Humidity66%

Visibility6.2 mi

Dew point31°

See detailed hourly forecast

Monthly outlook for Grant, MT: average high 52.8°, average low 34.7°. That is 3.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 18 October (66.2°), the coolest 13 October (25.4°).

52.8°/34.7°

Average high / low

+3.2°

Above normal

4 / 4

Wet days / normal

1.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	52.1°	47.9°	+2.4°
20 October – 29 October	53.8°	43.8°	+5.6°
30 October – 8 November	at normal	37.8°	—

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).

Sun, 1141° / 33°

0.51

41 °

Grant, Sunday, 11 October

Snow. High 41°, low 33°.

Pressure29.85 inHg

Wind7.5 mph NE

Humidity87%

Visibility3.4 mi

Dew point30°

Mon, 1233° / 28°

0.05

33 °

Grant, Monday, 12 October

Light snow. High 33°, low 28°.

Pressure30.12 inHg

Wind2.5 mph NE

Humidity96%

Visibility2.8 mi

Dew point26°

Tue, 1345° / 25°

45 °

Grant, Tuesday, 13 October

Partly cloudy. High 45°, low 25°.

Pressure30.18 inHg

Wind1.6 mph SE

Humidity89%

Visibility4.5 mi

Dew point31°

Wed, 1451° / 30°

51 °

Grant, Wednesday, 14 October

Clear. High 51°, low 30°.

Pressure30.18 inHg

Wind2.8 mph S

Humidity62%

Visibility—

Dew point29°

Thu, 1555° / 27°

55 °

Grant, Thursday, 15 October

Clear. High 55°, low 27°.

Pressure30.42 inHg

Wind3 mph E

Humidity51%

Visibility—

Dew point28°

Fri, 1648° / 35°

48 °

Grant, Friday, 16 October

Overcast. High 48°, low 35°.

Pressure30.62 inHg

Wind4.4 mph NE

Humidity68%

Visibility—

Dew point29°

Sat, 1762° / 36°

62 °

Grant, Saturday, 17 October

Overcast. High 62°, low 36°.

Pressure30.15 inHg

Wind7.1 mph S

Humidity19%

Visibility—

Dew point11°

Sun, 1866° / 45°

66 °

Grant, Sunday, 18 October

Partly cloudy. High 66°, low 45°.

Pressure29.94 inHg

Wind18.9 mph SW

Humidity23%

Visibility—

Dew point22°

Mon, 1960° / 44°

60 °

Grant, Monday, 19 October

Overcast. High 60°, low 44°.

Pressure29.88 inHg

Wind14.5 mph W

Humidity32%

Visibility—

Dew point25°

Tue, 2064° / 44°

64 °

Grant, Tuesday, 20 October

Overcast. High 64°, low 44°.

Pressure29.77 inHg

Wind18.2 mph SW

Humidity20%

Visibility—

Dew point17°

Wed, 2151° / 36°

51 °

Grant, Wednesday, 21 October

Partly cloudy. High 51°, low 36°.

Pressure29.83 inHg

Wind18.2 mph W

Humidity26%

Visibility—

Dew point14°

Thu, 2255° / 31°

55 °

Grant, Thursday, 22 October

Overcast. High 55°, low 31°.

Pressure30.00 inHg

Wind16.9 mph SW

Humidity32%

Visibility—

Dew point20°

Fri, 2351° / 36°

0.02

51 °

Grant, Friday, 23 October

Light rain. High 51°, low 36°.

Pressure29.85 inHg

Wind29.2 mph W

Humidity62%

Visibility—

Dew point36°

Sat, 2452° / 29°

52 °

Grant, Saturday, 24 October

Clear. High 52°, low 29°.

Pressure30.09 inHg

Wind10.9 mph SW

Humidity39%

Visibility—

Dew point19°

Sun, 2550° / 34°

0.15

50 °

Grant, Sunday, 25 October

Snow. High 50°, low 34°.

Pressure29.53 inHg

Wind30.3 mph SW

Humidity81%

Visibility—

Dew point35°

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

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)

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)

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.