As of 16:48 MDT

Weather in Chester, MT

83°

Chester, Saturday, 8 August, 16:48

Overcast. Feels like 81°. High 83°, low 52°.

Pressure29.83 inHg

Wind8 mph NE

Humidity29%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Sun, 0981° / 50°

81 °

Chester, Sunday, 9 August

Clear. High 81°, low 50°.

Pressure29.88 inHg

Wind11.9 mph NW

Humidity36%

Visibility6.2 mi

Dew point47°

Mon, 1083° / 45°

83 °

Chester, Monday, 10 August

Clear. High 83°, low 45°.

Pressure29.88 inHg

Wind4.9 mph E

Humidity38%

Visibility6.2 mi

Dew point46°

Tue, 1182° / 59°

82 °

Chester, Tuesday, 11 August

Clear. High 82°, low 59°.

Pressure29.97 inHg

Wind6.8 mph N

Humidity38%

Visibility6.2 mi

Dew point48°

Wed, 1286° / 62°

86 °

Chester, Wednesday, 12 August

Overcast. High 86°, low 62°.

Pressure29.88 inHg

Wind8.8 mph E

Humidity34%

Visibility6.2 mi

Dew point47°

Thu, 1388° / 58°

0.23

88 °

Chester, Thursday, 13 August

Rain. High 88°, low 58°.

Pressure29.88 inHg

Wind21.6 mph E

Humidity41%

Visibility—

Dew point47°

Fri, 1478° / 65°

0.01

78 °

Chester, Friday, 14 August

Light rain. High 78°, low 65°.

Pressure29.91 inHg

Wind13.3 mph NE

Humidity46%

Visibility—

Dew point51°

Sat, 1578° / 59°

78 °

Chester, Saturday, 15 August

Overcast. High 78°, low 59°.

Pressure30.06 inHg

Wind14.9 mph NE

Humidity45%

Visibility—

Dew point46°

Sun, 1687° / 60°

0.11

87 °

Chester, Sunday, 16 August

Light rain. High 87°, low 60°.

Pressure29.97 inHg

Wind18.8 mph NW

Humidity30%

Visibility—

Dew point42°

Mon, 1786° / 66°

86 °

Chester, Monday, 17 August

Clear. High 86°, low 66°.

Pressure30.00 inHg

Wind11.4 mph E

Humidity27%

Visibility—

Dew point41°

Tue, 1877° / 68°

77 °

Chester, Tuesday, 18 August

Overcast. High 77°, low 68°.

Pressure29.94 inHg

Wind13.4 mph W

Humidity29%

Visibility—

Dew point41°

Wed, 1983° / 59°

0.04

83 °

Chester, Wednesday, 19 August

Light rain. High 83°, low 59°.

Pressure30.03 inHg

Wind9 mph SE

Humidity43%

Visibility—

Dew point48°

Thu, 2090° / 65°

90 °

Chester, Thursday, 20 August

Overcast. High 90°, low 65°.

Pressure29.85 inHg

Wind8.9 mph SE

Humidity25%

Visibility—

Dew point41°

Fri, 2186° / 69°

86 °

Chester, Friday, 21 August

Clear. High 86°, low 69°.

Pressure29.94 inHg

Wind13 mph NE

Humidity37%

Visibility—

Dew point50°

Sat, 2287° / 66°

87 °

Chester, Saturday, 22 August

Overcast. High 87°, low 66°.

Pressure29.97 inHg

Wind15.5 mph E

Humidity40%

Visibility—

Dew point51°

Sun, 2387° / 65°

87 °

Chester, Sunday, 23 August

Mostly clear. High 87°, low 65°.

Pressure30.06 inHg

Wind13.9 mph NE

Humidity30%

Visibility—

Dew point44°

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.