EN
English Español

As of 17:22 MDT

Weather in Boulder, MT

88°Current weather

Boulder, Saturday, 8 August, 17:22

Clear. Feels like 84°. High 88°, low 52°.

Pressure29.74 inHg
Wind12 mph W
Humidity14%
Visibility6.2 mi
Dew point31°
Sun, 0983° / 52°0Clear
83 °Clear

Boulder, Sunday, 9 August

Clear. High 83°, low 52°.

Pressure29.88 inHg
Wind6.8 mph NW
Humidity12%
Visibility6.2 mi
Dew point24°
Mon, 1089° / 49°0Clear
89 °Clear

Boulder, Monday, 10 August

Clear. High 89°, low 49°.

Pressure29.83 inHg
Wind7 mph W
Humidity15%
Visibility6.2 mi
Dew point29°
Tue, 1189° / 58°0Clear
89 °Clear

Boulder, Tuesday, 11 August

Clear. High 89°, low 58°.

Pressure29.91 inHg
Wind3.4 mph S
Humidity14%
Visibility6.2 mi
Dew point27°
Wed, 1290° / 59°0Clear
90 °Clear

Boulder, Wednesday, 12 August

Clear. High 90°, low 59°.

Pressure29.83 inHg
Wind5.2 mph SE
Humidity15%
Visibility6.2 mi
Dew point31°
Thu, 1384° / 54°0Clear
84 °Clear

Boulder, Thursday, 13 August

Clear. High 84°, low 54°.

Pressure29.83 inHg
Wind9.7 mph N
Humidity25%
Visibility—
Dew point39°
Fri, 1488° / 65°0.01Light rain
88 °Light rain

Boulder, Friday, 14 August

Light rain. High 88°, low 65°.

Pressure29.83 inHg
Wind11.7 mph NW
Humidity18%
Visibility—
Dew point35°
Sat, 1573° / 59°0.45Rain
73 °Rain

Boulder, Saturday, 15 August

Rain. High 73°, low 59°.

Pressure30.06 inHg
Wind12 mph W
Humidity59%
Visibility—
Dew point52°
Sun, 1685° / 56°0.01Light rain
85 °Light rain

Boulder, Sunday, 16 August

Light rain. High 85°, low 56°.

Pressure30.03 inHg
Wind9.2 mph SW
Humidity26%
Visibility—
Dew point40°
Mon, 1789° / 58°0Partly cloudy
89 °Partly cloudy

Boulder, Monday, 17 August

Partly cloudy. High 89°, low 58°.

Pressure30.03 inHg
Wind5.8 mph W
Humidity18%
Visibility—
Dew point33°
Tue, 1879° / 59°0.06Light rain
79 °Light rain

Boulder, Tuesday, 18 August

Light rain. High 79°, low 59°.

Pressure29.94 inHg
Wind21.9 mph W
Humidity31%
Visibility—
Dew point44°
Wed, 1984° / 52°0Clear
84 °Clear

Boulder, Wednesday, 19 August

Clear. High 84°, low 52°.

Pressure30.06 inHg
Wind5.1 mph W
Humidity28%
Visibility—
Dew point40°
Thu, 2088° / 59°0Overcast
88 °Overcast

Boulder, Thursday, 20 August

Overcast. High 88°, low 59°.

Pressure29.91 inHg
Wind7 mph NW
Humidity20%
Visibility—
Dew point36°
Fri, 2190° / 64°0Clear
90 °Clear

Boulder, Friday, 21 August

Clear. High 90°, low 64°.

Pressure29.91 inHg
Wind8.2 mph W
Humidity19%
Visibility—
Dew point37°
Sat, 2292° / 63°0Clear
92 °Clear

Boulder, Saturday, 22 August

Clear. High 92°, low 63°.

Pressure29.94 inHg
Wind10.5 mph NW
Humidity21%
Visibility—
Dew point40°
Sun, 2389° / 63°0Overcast
89 °Overcast

Boulder, Sunday, 23 August

Overcast. High 89°, low 63°.

Pressure30.00 inHg
Wind10.5 mph NE
Humidity28%
Visibility—
Dew point45°

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 Boulder, 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 Boulder, 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.