As of 19:55 MDT

Weather in Grant, MT

60°

Grant, Friday, 9 October, 19:55

Partly cloudy. Feels like 57°. High 74°, low 37°.

Pressure29.53 inHg

Wind10.5 mph SW

Humidity25%

Visibility6.2 mi

Dew point25°

See detailed hourly forecast

Monthly outlook for Grant, MT: average high 48.3°, average low 30.4°. That is 0.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 9 October (74.4°), the coolest 23 October (23.4°).

48.3°/30.4°

Average high / low

+0.5°

Above normal

5 / 4

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	48.9°	48.1°	+0.4°
19 October – 28 October	47.5°	44.7°	+1.5°
29 October – 7 November	at normal	38.1°	—

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).

Sat, 1052° / 35°

0.42

52 °

Grant, Saturday, 10 October

Rain. High 52°, low 35°.

Pressure29.53 inHg

Wind2.6 mph NE

Humidity61%

Visibility6.2 mi

Dew point40°

Sun, 1136° / 25°

0.89

36 °

Grant, Sunday, 11 October

Snow. High 36°, low 25°.

Pressure29.91 inHg

Wind4.2 mph E

Humidity98%

Visibility2.2 mi

Dew point29°

Mon, 1230° / 26°

0.14

30 °

Grant, Monday, 12 October

Snow. High 30°, low 26°.

Pressure30.15 inHg

Wind1.3 mph E

Humidity97%

Visibility1.8 mi

Dew point25°

Tue, 1332° / 24°

32 °

Grant, Tuesday, 13 October

Overcast. High 32°, low 24°.

Pressure30.24 inHg

Wind3.2 mph SE

Humidity98%

Visibility0.0 mi

Dew point27°

Wed, 1440° / 24°

40 °

Grant, Wednesday, 14 October

Clear. High 40°, low 24°.

Pressure30.33 inHg

Wind1.2 mph NW

Humidity89%

Visibility—

Dew point30°

Thu, 1550° / 26°

50 °

Grant, Thursday, 15 October

Mostly clear. High 50°, low 26°.

Pressure30.36 inHg

Wind11.1 mph NE

Humidity60%

Visibility—

Dew point30°

Fri, 1647° / 33°

47 °

Grant, Friday, 16 October

Overcast. High 47°, low 33°.

Pressure30.56 inHg

Wind4.5 mph NE

Humidity58%

Visibility—

Dew point26°

Sat, 1764° / 36°

64 °

Grant, Saturday, 17 October

Partly cloudy. High 64°, low 36°.

Pressure30.09 inHg

Wind7.5 mph S

Humidity23%

Visibility—

Dew point17°

Sun, 1863° / 39°

63 °

Grant, Sunday, 18 October

Clear. High 63°, low 39°.

Pressure29.94 inHg

Wind7.5 mph S

Humidity26%

Visibility—

Dew point20°

Mon, 1952° / 41°

52 °

Grant, Monday, 19 October

Clear. High 52°, low 41°.

Pressure29.85 inHg

Wind12.1 mph W

Humidity40%

Visibility—

Dew point25°

Tue, 2046° / 31°

0.07

46 °

Grant, Tuesday, 20 October

Snow. High 46°, low 31°.

Pressure29.77 inHg

Wind17.9 mph NW

Humidity44%

Visibility—

Dew point24°

Wed, 2151° / 25°

51 °

Grant, Wednesday, 21 October

Overcast. High 51°, low 25°.

Pressure30.12 inHg

Wind9.3 mph S

Humidity36%

Visibility—

Dew point15°

Thu, 2243° / 31°

0.08

43 °

Grant, Thursday, 22 October

Snow. High 43°, low 31°.

Pressure29.94 inHg

Wind11.3 mph NW

Humidity62%

Visibility—

Dew point28°

Fri, 2344° / 23°

44 °

Grant, Friday, 23 October

Mostly clear. High 44°, low 23°.

Pressure30.39 inHg

Wind7.3 mph W

Humidity44%

Visibility—

Dew point16°

Sat, 2450° / 28°

50 °

Grant, Saturday, 24 October

Overcast. High 50°, low 28°.

Pressure30.36 inHg

Wind7.8 mph W

Humidity31%

Visibility—

Dew point13°

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

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)

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)

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.