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As of 11:00 MDT

Weather in Chestnut, MT

49°Current weather

Chestnut, Thursday, 8 October, 11:00

Mostly clear. Feels like 46°. High 72°, low 36°.

Pressure30.09 inHg
Wind5.4 mph W
Humidity32%
Visibility6.2 mi
Dew point23°
Fri, 0977° / 37°0Mostly clear
77 °Mostly clear

Chestnut, Friday, 9 October

Mostly clear. High 77°, low 37°.

Pressure29.62 inHg
Wind15.3 mph W
Humidity22%
Visibility6.2 mi
Dew point25°
Sat, 1057° / 34°0.88Snow
57 °Snow

Chestnut, Saturday, 10 October

Snow. High 57°, low 34°.

Pressure29.53 inHg
Wind2.3 mph E
Humidity41%
Visibility6.2 mi
Dew point34°
Sun, 1133° / 28°0.75Snow
33 °Snow

Chestnut, Sunday, 11 October

Snow. High 33°, low 28°.

Pressure30.03 inHg
Wind11.3 mph E
Humidity96%
Visibility1.0 mi
Dew point26°
Mon, 1235° / 24°0.69Snow
35 °Snow

Chestnut, Monday, 12 October

Snow. High 35°, low 24°.

Pressure30.09 inHg
Wind10.7 mph E
Humidity95%
Visibility—
Dew point28°
Tue, 1340° / 20°0Mostly clear
40 °Mostly clear

Chestnut, Tuesday, 13 October

Mostly clear. High 40°, low 20°.

Pressure30.00 inHg
Wind2.6 mph E
Humidity70%
Visibility—
Dew point28°
Wed, 1448° / 31°0.94Snow
48 °Snow

Chestnut, Wednesday, 14 October

Snow. High 48°, low 31°.

Pressure29.59 inHg
Wind4.9 mph W
Humidity78%
Visibility—
Dew point39°
Thu, 1531° / 18°0.93Snow
31 °Snow

Chestnut, Thursday, 15 October

Snow. High 31°, low 18°.

Pressure30.42 inHg
Wind6.8 mph NW
Humidity93%
Visibility—
Dew point27°
Fri, 1633° / 11°0Clear
33 °Clear

Chestnut, Friday, 16 October

Clear. High 33°, low 11°.

Pressure30.59 inHg
Wind2.3 mph SW
Humidity91%
Visibility—
Dew point25°
Sat, 1737° / 19°0Mostly clear
37 °Mostly clear

Chestnut, Saturday, 17 October

Mostly clear. High 37°, low 19°.

Pressure30.24 inHg
Wind3.5 mph SW
Humidity101%
Visibility—
Dew point34°
Sun, 1841° / 26°0Clear
41 °Clear

Chestnut, Sunday, 18 October

Clear. High 41°, low 26°.

Pressure30.12 inHg
Wind4.1 mph SW
Humidity90%
Visibility—
Dew point35°
Mon, 1948° / 30°0Partly cloudy
48 °Partly cloudy

Chestnut, Monday, 19 October

Partly cloudy. High 48°, low 30°.

Pressure30.18 inHg
Wind5.5 mph S
Humidity75%
Visibility—
Dew point35°
Tue, 2051° / 33°0Mostly clear
51 °Mostly clear

Chestnut, Tuesday, 20 October

Mostly clear. High 51°, low 33°.

Pressure30.27 inHg
Wind5.1 mph S
Humidity62%
Visibility—
Dew point34°
Wed, 2147° / 33°0Partly cloudy
47 °Partly cloudy

Chestnut, Wednesday, 21 October

Partly cloudy. High 47°, low 33°.

Pressure30.24 inHg
Wind17.8 mph NW
Humidity50%
Visibility—
Dew point28°
Thu, 2251° / 31°0Overcast
51 °Overcast

Chestnut, Thursday, 22 October

Overcast. High 51°, low 31°.

Pressure30.06 inHg
Wind8.1 mph S
Humidity33%
Visibility—
Dew point16°
Fri, 2341° / 24°0.56Snow
41 °Snow

Chestnut, Friday, 23 October

Snow. High 41°, low 24°.

Pressure29.80 inHg
Wind5.1 mph SW
Humidity100%
Visibility—
Dew point31°

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.