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As of 00:46 MDT

Weather in Chester, MT

58°Current weather

Chester, Saturday, 10 October, 00:46

Overcast. Feels like 56°. High 58°, low 31°.

Pressure29.53 inHg
Wind26 mph NW
Humidity47%
Visibility6.2 mi
Dew point38°

Monthly outlook for Chester, MT: average high 51.4°, average low 34.8°. That is 2.2° below the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 17 October (61.6°), the coolest 13 October (26°).

51.4°/34.8°
Average high / low
−2.2°
Below normal
2 / 2
Wet days / normal
0.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
10 October – 19 October49.9°56.2°-3.5°
20 October – 29 October54°52.4°+0.9°
30 October – 8 Novemberat normal46°—

October records over 66 years

86°7 October 1980All-time high
-13.9°30 October 1991All-time low
Sun, 1138° / 28°0.31Snow
38 °Snow

Chester, Sunday, 11 October

Snow. High 38°, low 28°.

Pressure30.18 inHg
Wind14.1 mph NE
Humidity88%
Visibility5.1 mi
Dew point30°
Mon, 1235° / 29°0.23Snow
35 °Snow

Chester, Monday, 12 October

Snow. High 35°, low 29°.

Pressure30.21 inHg
Wind2.5 mph NE
Humidity93%
Visibility6.2 mi
Dew point30°
Tue, 1345° / 26°0Clear
45 °Clear

Chester, Tuesday, 13 October

Clear. High 45°, low 26°.

Pressure30.15 inHg
Wind6.3 mph W
Humidity86%
Visibility6.2 mi
Dew point30°
Wed, 1452° / 27°0Clear
52 °Clear

Chester, Wednesday, 14 October

Clear. High 52°, low 27°.

Pressure30.24 inHg
Wind7.4 mph S
Humidity57%
Visibility—
Dew point28°
Thu, 1552° / 34°0Overcast
52 °Overcast

Chester, Thursday, 15 October

Overcast. High 52°, low 34°.

Pressure30.36 inHg
Wind16.6 mph N
Humidity56%
Visibility—
Dew point34°
Fri, 1643° / 30°0Clear
43 °Clear

Chester, Friday, 16 October

Clear. High 43°, low 30°.

Pressure30.68 inHg
Wind12.8 mph SE
Humidity54%
Visibility—
Dew point22°
Sat, 1762° / 33°0Overcast
62 °Overcast

Chester, Saturday, 17 October

Overcast. High 62°, low 33°.

Pressure29.88 inHg
Wind16.4 mph W
Humidity27%
Visibility—
Dew point23°
Sun, 1857° / 41°0Clear
57 °Clear

Chester, Sunday, 18 October

Clear. High 57°, low 41°.

Pressure29.97 inHg
Wind7.1 mph SE
Humidity33%
Visibility—
Dew point23°
Mon, 1956° / 45°0Light rain
56 °Light rain

Chester, Monday, 19 October

Light rain. High 56°, low 45°.

Pressure29.77 inHg
Wind17.2 mph W
Humidity47%
Visibility—
Dew point33°
Tue, 2052° / 39°0Overcast
52 °Overcast

Chester, Tuesday, 20 October

Overcast. High 52°, low 39°.

Pressure29.71 inHg
Wind12 mph W
Humidity47%
Visibility—
Dew point28°
Wed, 2152° / 37°0Clear
52 °Clear

Chester, Wednesday, 21 October

Clear. High 52°, low 37°.

Pressure30.03 inHg
Wind13.5 mph W
Humidity44%
Visibility—
Dew point25°
Thu, 2253° / 41°0Mostly clear
53 °Mostly clear

Chester, Thursday, 22 October

Mostly clear. High 53°, low 41°.

Pressure29.80 inHg
Wind21.9 mph W
Humidity36%
Visibility—
Dew point23°
Fri, 2352° / 37°0Overcast
52 °Overcast

Chester, Friday, 23 October

Overcast. High 52°, low 37°.

Pressure30.24 inHg
Wind14.3 mph W
Humidity43%
Visibility—
Dew point24°
Sat, 2454° / 36°0Overcast
54 °Overcast

Chester, Saturday, 24 October

Overcast. High 54°, low 36°.

Pressure30.12 inHg
Wind16.2 mph W
Humidity40%
Visibility—
Dew point22°
Sun, 2561° / 43°0Clear
61 °Clear

Chester, Sunday, 25 October

Clear. High 61°, low 43°.

Pressure30.30 inHg
Wind14.4 mph W
Humidity34%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2651° / 33°0.03Climate normal
51 °Climate normal

Chester, Monday, 26 October

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.03 in
Chance of precipitation20%
Record high71° (1983)
Record low-1° (2020)
Tue, 2751° / 32°0.03Climate normal
51 °Climate normal

Chester, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (2001)
Record low6° (2023)
Wed, 2849° / 31°0.02Climate normal
49 °Climate normal

Chester, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high49°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (1987)
Record low-3° (1991)
Thu, 2948° / 31°0.02Climate normal
48 °Climate normal

Chester, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high48°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high72° (2008)
Record low-11° (1991)
Fri, 3048° / 30°0.01Climate normal
48 °Climate normal

Chester, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.01 in
Chance of precipitation7%
Record high68° (1983)
Record low-14° (1991)
Sat, 3147° / 30°0.04Climate normal
47 °Climate normal

Chester, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high64° (1983)
Record low-5° (1984)
Sun, 0147° / 30°0.01Climate normal
47 °Climate normal

Chester, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.01 in
Chance of precipitation7%
Record high69° (2025)
Record low-9° (1984)
Mon, 0247° / 30°0.02Climate normal
47 °Climate normal

Chester, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high65° (1981)
Record low-18° (1991)
Tue, 0348° / 30°0.02Climate normal
48 °Climate normal

Chester, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (1981)
Record low-2° (1991)
Wed, 0447° / 31°0.03Climate normal
47 °Climate normal

Chester, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (2001)
Record low5° (2003)
Thu, 0546° / 29°0.03Climate normal
46 °Climate normal

Chester, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high46°
Average low29°
Average precipitation0.03 in
Chance of precipitation22%
Record high68° (2010)
Record low-8° (2003)
Fri, 0644° / 28°0.02Climate normal
44 °Climate normal

Chester, Friday, 6 November

Climate normal for this date — 60-year average.

Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high67° (2010)
Record low2° (2003)
Sat, 0744° / 28°0.02Climate normal
44 °Climate normal

Chester, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation22%
Record high70° (2010)
Record low-6° (1973)
Sun, 0843° / 27°0.04Climate normal
43 °Climate normal

Chester, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high43°
Average low27°
Average precipitation0.04 in
Chance of precipitation23%
Record high59° (1999)
Record low-1° (1973)

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 Chester, 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 Chester, 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.