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As of 19:42 MDT

Weather in Blair, MT

77°Current weather

Blair, Saturday, 8 August, 19:42

Overcast. Feels like 76°. High 90°, low 54°.

Pressure29.83 inHg
Wind11.7 mph NE
Humidity36%
Visibility6.2 mi
Dew point48°
Sun, 0988° / 54°0Clear
88 °Clear

Blair, Sunday, 9 August

Clear. High 88°, low 54°.

Pressure29.85 inHg
Wind12.1 mph E
Humidity29%
Visibility6.2 mi
Dew point46°
Mon, 1085° / 49°0Overcast
85 °Overcast

Blair, Monday, 10 August

Overcast. High 85°, low 49°.

Pressure29.88 inHg
Wind13.2 mph NE
Humidity32%
Visibility6.2 mi
Dew point45°
Tue, 1189° / 59°0Mostly clear
89 °Mostly clear

Blair, Tuesday, 11 August

Mostly clear. High 89°, low 59°.

Pressure29.91 inHg
Wind8.1 mph E
Humidity28%
Visibility6.2 mi
Dew point45°
Wed, 1287° / 60°0Clear
87 °Clear

Blair, Wednesday, 12 August

Clear. High 87°, low 60°.

Pressure29.91 inHg
Wind16.5 mph E
Humidity31%
Visibility6.2 mi
Dew point47°
Thu, 1387° / 61°0Light rain
87 °Light rain

Blair, Thursday, 13 August

Light rain. High 87°, low 61°.

Pressure29.94 inHg
Wind18 mph E
Humidity32%
Visibility—
Dew point45°
Fri, 1477° / 67°0.19Light rain
77 °Light rain

Blair, Friday, 14 August

Light rain. High 77°, low 67°.

Pressure29.94 inHg
Wind13.4 mph E
Humidity63%
Visibility—
Dew point60°
Sat, 1580° / 59°0.01Light rain
80 °Light rain

Blair, Saturday, 15 August

Light rain. High 80°, low 59°.

Pressure30.15 inHg
Wind11.3 mph N
Humidity39%
Visibility—
Dew point46°
Sun, 1685° / 62°0Partly cloudy
85 °Partly cloudy

Blair, Sunday, 16 August

Partly cloudy. High 85°, low 62°.

Pressure30.03 inHg
Wind14.9 mph SE
Humidity40%
Visibility—
Dew point52°
Mon, 1793° / 68°0Mostly clear
93 °Mostly clear

Blair, Monday, 17 August

Mostly clear. High 93°, low 68°.

Pressure29.80 inHg
Wind16.6 mph NW
Humidity18%
Visibility—
Dew point40°
Tue, 1874° / 62°0Overcast
74 °Overcast

Blair, Tuesday, 18 August

Overcast. High 74°, low 62°.

Pressure30.06 inHg
Wind11.8 mph NE
Humidity40%
Visibility—
Dew point46°
Wed, 1974° / 58°0Overcast
74 °Overcast

Blair, Wednesday, 19 August

Overcast. High 74°, low 58°.

Pressure30.12 inHg
Wind15.9 mph E
Humidity40%
Visibility—
Dew point46°
Thu, 2088° / 61°0.13Light rain
88 °Light rain

Blair, Thursday, 20 August

Light rain. High 88°, low 61°.

Pressure29.83 inHg
Wind14.9 mph SE
Humidity37%
Visibility—
Dew point51°
Fri, 2178° / 65°0.32Rain
78 °Rain

Blair, Friday, 21 August

Rain. High 78°, low 65°.

Pressure29.74 inHg
Wind15.1 mph W
Humidity71%
Visibility—
Dew point58°
Sat, 2278° / 62°0Mostly clear
78 °Mostly clear

Blair, Saturday, 22 August

Mostly clear. High 78°, low 62°.

Pressure29.88 inHg
Wind17.4 mph NW
Humidity29%
Visibility—
Dew point38°
Sun, 2391° / 63°0Overcast
91 °Overcast

Blair, Sunday, 23 August

Overcast. High 91°, low 63°.

Pressure29.77 inHg
Wind16 mph S
Humidity23%
Visibility—
Dew point39°

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 Blair, 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 Blair, 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.