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As of 09:26 MDT

Weather in Chestnut, MT

59°Current weather

Chestnut, Friday, 9 October, 09:26

Overcast. Feels like 56°. High 77°, low 40°.

Pressure29.80 inHg
Wind2 mph S
Humidity38%
Visibility6.2 mi
Dew point33°
Sat, 1057° / 32°0.57Rain
57 °Rain

Chestnut, Saturday, 10 October

Rain. High 57°, low 32°.

Pressure29.56 inHg
Wind0.7 mph S
Humidity68%
Visibility4.6 mi
Dew point44°
Sun, 1134° / 27°1.09Snow
34 °Snow

Chestnut, Sunday, 11 October

Snow. High 34°, low 27°.

Pressure29.94 inHg
Wind11 mph E
Humidity92%
Visibility1.7 mi
Dew point29°
Mon, 1234° / 21°0.45Snow
34 °Snow

Chestnut, Monday, 12 October

Snow. High 34°, low 21°.

Pressure30.09 inHg
Wind1.3 mph NE
Humidity87%
Visibility6.2 mi
Dew point24°
Tue, 1337° / 18°0Partly cloudy
37 °Partly cloudy

Chestnut, Tuesday, 13 October

Partly cloudy. High 37°, low 18°.

Pressure30.12 inHg
Wind3.5 mph W
Humidity81%
Visibility—
Dew point28°
Wed, 1441° / 25°0Clear
41 °Clear

Chestnut, Wednesday, 14 October

Clear. High 41°, low 25°.

Pressure30.12 inHg
Wind5.2 mph W
Humidity68%
Visibility—
Dew point27°
Thu, 1548° / 32°0Overcast
48 °Overcast

Chestnut, Thursday, 15 October

Overcast. High 48°, low 32°.

Pressure30.24 inHg
Wind7 mph W
Humidity59%
Visibility—
Dew point31°
Fri, 1648° / 30°0.04Snow
48 °Snow

Chestnut, Friday, 16 October

Snow. High 48°, low 30°.

Pressure30.53 inHg
Wind4.5 mph S
Humidity53%
Visibility—
Dew point24°
Sat, 1761° / 38°0Partly cloudy
61 °Partly cloudy

Chestnut, Saturday, 17 October

Partly cloudy. High 61°, low 38°.

Pressure30.12 inHg
Wind6 mph SW
Humidity31%
Visibility—
Dew point23°
Sun, 1860° / 40°0Overcast
60 °Overcast

Chestnut, Sunday, 18 October

Overcast. High 60°, low 40°.

Pressure30.00 inHg
Wind5.1 mph S
Humidity33%
Visibility—
Dew point25°
Mon, 1962° / 40°0Overcast
62 °Overcast

Chestnut, Monday, 19 October

Overcast. High 62°, low 40°.

Pressure29.85 inHg
Wind6.7 mph S
Humidity27%
Visibility—
Dew point22°
Tue, 2051° / 37°0Mostly clear
51 °Mostly clear

Chestnut, Tuesday, 20 October

Mostly clear. High 51°, low 37°.

Pressure30.12 inHg
Wind6.4 mph W
Humidity48%
Visibility—
Dew point28°
Wed, 2159° / 37°0Overcast
59 °Overcast

Chestnut, Wednesday, 21 October

Overcast. High 59°, low 37°.

Pressure30.03 inHg
Wind14.8 mph W
Humidity31%
Visibility—
Dew point20°
Thu, 2248° / 33°0Partly cloudy
48 °Partly cloudy

Chestnut, Thursday, 22 October

Partly cloudy. High 48°, low 33°.

Pressure30.36 inHg
Wind4.3 mph W
Humidity43%
Visibility—
Dew point22°
Fri, 2362° / 34°0Clear
62 °Clear

Chestnut, Friday, 23 October

Clear. High 62°, low 34°.

Pressure30.09 inHg
Wind5 mph S
Humidity21%
Visibility—
Dew point15°
Sat, 2464° / 41°0Clear
64 °Clear

Chestnut, Saturday, 24 October

Clear. High 64°, low 41°.

Pressure30.03 inHg
Wind6 mph S
Humidity19%
Visibility—
Dew point15°

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 Chestnut, 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 Chestnut, 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.