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As of 08:56 MDT

Weather in Vandalia, MT

69°Current weather

Vandalia, Sunday, 9 August, 08:56

Clear. Feels like 68°. High 88°, low 60°.

Pressure29.91 inHg
Wind11.2 mph SE
Humidity50%
Visibility6.2 mi
Dew point50°
Mon, 1086° / 55°0Overcast
86 °Overcast

Vandalia, Monday, 10 August

Overcast. High 86°, low 55°.

Pressure29.85 inHg
Wind13.8 mph E
Humidity34%
Visibility6.2 mi
Dew point48°
Tue, 1189° / 65°0Clear
89 °Clear

Vandalia, Tuesday, 11 August

Clear. High 89°, low 65°.

Pressure29.88 inHg
Wind1 mph S
Humidity33%
Visibility6.2 mi
Dew point49°
Wed, 1284° / 64°0Clear
84 °Clear

Vandalia, Wednesday, 12 August

Clear. High 84°, low 64°.

Pressure29.91 inHg
Wind15.7 mph E
Humidity34%
Visibility6.2 mi
Dew point49°
Thu, 1376° / 64°0.03Light rain
76 °Light rain

Vandalia, Thursday, 13 August

Light rain. High 76°, low 64°.

Pressure29.94 inHg
Wind21.4 mph E
Humidity44%
Visibility—
Dew point51°
Fri, 1473° / 64°0.81Rain
73 °Rain

Vandalia, Friday, 14 August

Rain. High 73°, low 64°.

Pressure29.94 inHg
Wind15.4 mph SE
Humidity79%
Visibility—
Dew point60°
Sat, 1579° / 60°0Overcast
79 °Overcast

Vandalia, Saturday, 15 August

Overcast. High 79°, low 60°.

Pressure30.12 inHg
Wind11.1 mph N
Humidity48%
Visibility—
Dew point49°
Sun, 1692° / 66°0.05Light rain
92 °Light rain

Vandalia, Sunday, 16 August

Light rain. High 92°, low 66°.

Pressure30.03 inHg
Wind10.5 mph SE
Humidity40%
Visibility—
Dew point54°
Mon, 1795° / 75°0Overcast
95 °Overcast

Vandalia, Monday, 17 August

Overcast. High 95°, low 75°.

Pressure29.74 inHg
Wind19.5 mph W
Humidity26%
Visibility—
Dew point47°
Tue, 1882° / 68°0Overcast
82 °Overcast

Vandalia, Tuesday, 18 August

Overcast. High 82°, low 68°.

Pressure30.00 inHg
Wind14.9 mph N
Humidity39%
Visibility—
Dew point46°
Wed, 1992° / 67°0Partly cloudy
92 °Partly cloudy

Vandalia, Wednesday, 19 August

Partly cloudy. High 92°, low 67°.

Pressure29.94 inHg
Wind8.1 mph SE
Humidity31%
Visibility—
Dew point48°
Thu, 2097° / 73°0Clear
97 °Clear

Vandalia, Thursday, 20 August

Clear. High 97°, low 73°.

Pressure29.77 inHg
Wind14.2 mph W
Humidity21%
Visibility—
Dew point43°
Fri, 2185° / 68°0Overcast
85 °Overcast

Vandalia, Friday, 21 August

Overcast. High 85°, low 68°.

Pressure29.88 inHg
Wind13.1 mph NE
Humidity34%
Visibility—
Dew point48°
Sat, 2289° / 67°0Clear
89 °Clear

Vandalia, Saturday, 22 August

Clear. High 89°, low 67°.

Pressure30.00 inHg
Wind15.1 mph E
Humidity28%
Visibility—
Dew point46°
Sun, 2398° / 71°0Clear
98 °Clear

Vandalia, Sunday, 23 August

Clear. High 98°, low 71°.

Pressure29.91 inHg
Wind15.8 mph SE
Humidity24%
Visibility—
Dew point46°
Mon, 24102° / 73°0Clear
102 °Clear

Vandalia, Monday, 24 August

Clear. High 102°, low 73°.

Pressure29.85 inHg
Wind27 mph N
Humidity19%
Visibility—
Dew point43°

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 Vandalia, 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 Vandalia, 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.