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As of 04:21 MDT

Weather in Chestnut, MT

58°Current weather

Chestnut, Friday, 9 October, 04:21

Partly cloudy. Feels like 54°. High 77°, low 42°.

Pressure29.88 inHg
Wind0.8 mph SW
Humidity27%
Visibility6.2 mi
Dew point25°
Sat, 1056° / 34°0.67Snow
56 °Snow

Chestnut, Saturday, 10 October

Snow. High 56°, low 34°.

Pressure29.53 inHg
Wind2 mph E
Humidity49%
Visibility6.2 mi
Dew point38°
Sun, 1134° / 28°1.12Snow
34 °Snow

Chestnut, Sunday, 11 October

Snow. High 34°, low 28°.

Pressure29.94 inHg
Wind11.3 mph E
Humidity97%
Visibility0.8 mi
Dew point28°
Mon, 1232° / 21°0.37Snow
32 °Snow

Chestnut, Monday, 12 October

Snow. High 32°, low 21°.

Pressure30.03 inHg
Wind1.6 mph NE
Humidity94%
Visibility6.2 mi
Dew point25°
Tue, 1336° / 17°0Overcast
36 °Overcast

Chestnut, Tuesday, 13 October

Overcast. High 36°, low 17°.

Pressure30.09 inHg
Wind3.8 mph W
Humidity84%
Visibility—
Dew point28°
Wed, 1441° / 24°0Overcast
41 °Overcast

Chestnut, Wednesday, 14 October

Overcast. High 41°, low 24°.

Pressure30.06 inHg
Wind9.4 mph W
Humidity66%
Visibility—
Dew point27°
Thu, 1534° / 22°0.19Snow
34 °Snow

Chestnut, Thursday, 15 October

Snow. High 34°, low 22°.

Pressure30.42 inHg
Wind6.3 mph W
Humidity105%
Visibility—
Dew point34°
Fri, 1647° / 21°0Clear
47 °Clear

Chestnut, Friday, 16 October

Clear. High 47°, low 21°.

Pressure30.45 inHg
Wind4 mph S
Humidity63%
Visibility—
Dew point27°
Sat, 1756° / 33°0Overcast
56 °Overcast

Chestnut, Saturday, 17 October

Overcast. High 56°, low 33°.

Pressure30.21 inHg
Wind5.7 mph S
Humidity53%
Visibility—
Dew point33°
Sun, 1856° / 37°0Overcast
56 °Overcast

Chestnut, Sunday, 18 October

Overcast. High 56°, low 37°.

Pressure30.06 inHg
Wind5.9 mph S
Humidity46%
Visibility—
Dew point30°
Mon, 1959° / 39°0Overcast
59 °Overcast

Chestnut, Monday, 19 October

Overcast. High 59°, low 39°.

Pressure29.88 inHg
Wind6.5 mph SW
Humidity40%
Visibility—
Dew point29°
Tue, 2055° / 39°0Overcast
55 °Overcast

Chestnut, Tuesday, 20 October

Overcast. High 55°, low 39°.

Pressure29.83 inHg
Wind5 mph E
Humidity45%
Visibility—
Dew point29°
Wed, 2137° / 34°0.14Light snow
37 °Light snow

Chestnut, Wednesday, 21 October

Light snow. High 37°, low 34°.

Pressure30.24 inHg
Wind4.9 mph NE
Humidity98%
Visibility—
Dew point35°
Thu, 2240° / 34°0Light snow
40 °Light snow

Chestnut, Thursday, 22 October

Light snow. High 40°, low 34°.

Pressure30.21 inHg
Wind4.4 mph E
Humidity87%
Visibility—
Dew point33°
Fri, 2343° / 36°0.02Light rain
43 °Light rain

Chestnut, Friday, 23 October

Light rain. High 43°, low 36°.

Pressure30.00 inHg
Wind3.3 mph E
Humidity87%
Visibility—
Dew point36°
Sat, 2450° / 35°0Overcast
50 °Overcast

Chestnut, Saturday, 24 October

Overcast. High 50°, low 35°.

Pressure29.94 inHg
Wind3.8 mph S
Humidity54%
Visibility—
Dew point30°

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.