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As of 21:59 MDT

Weather in Great Falls, MT

72°Current weather

Great Falls, Saturday, 8 August, 21:59

Overcast. Feels like 71°. High 84°, low 52°.

Pressure29.85 inHg
Wind7.3 mph E
Humidity42%
Visibility6.2 mi
Dew point48°
Sun, 0982° / 51°0Clear
82 °Clear

Great Falls, Sunday, 9 August

Clear. High 82°, low 51°.

Pressure29.94 inHg
Wind9 mph NW
Humidity37%
Visibility6.2 mi
Dew point47°
Mon, 1087° / 47°0Clear
87 °Clear

Great Falls, Monday, 10 August

Clear. High 87°, low 47°.

Pressure29.83 inHg
Wind8.7 mph NW
Humidity27%
Visibility6.2 mi
Dew point44°
Tue, 1187° / 60°0Clear
87 °Clear

Great Falls, Tuesday, 11 August

Clear. High 87°, low 60°.

Pressure29.94 inHg
Wind7.9 mph N
Humidity30%
Visibility6.2 mi
Dew point43°
Wed, 1287° / 60°0Mostly clear
87 °Mostly clear

Great Falls, Wednesday, 12 August

Mostly clear. High 87°, low 60°.

Pressure29.85 inHg
Wind7.4 mph N
Humidity31%
Visibility6.2 mi
Dew point44°
Thu, 1380° / 56°0Mostly clear
80 °Mostly clear

Great Falls, Thursday, 13 August

Mostly clear. High 80°, low 56°.

Pressure29.85 inHg
Wind12.8 mph N
Humidity46%
Visibility—
Dew point48°
Fri, 1473° / 58°0.02Light rain
73 °Light rain

Great Falls, Friday, 14 August

Light rain. High 73°, low 58°.

Pressure30.09 inHg
Wind12.3 mph NE
Humidity58%
Visibility—
Dew point48°
Sat, 1583° / 53°0Partly cloudy
83 °Partly cloudy

Great Falls, Saturday, 15 August

Partly cloudy. High 83°, low 53°.

Pressure30.12 inHg
Wind9.5 mph NE
Humidity45%
Visibility—
Dew point46°
Sun, 1695° / 60°0Mostly clear
95 °Mostly clear

Great Falls, Sunday, 16 August

Mostly clear. High 95°, low 60°.

Pressure29.91 inHg
Wind18.3 mph NW
Humidity16%
Visibility—
Dew point34°
Mon, 1793° / 63°0Overcast
93 °Overcast

Great Falls, Monday, 17 August

Overcast. High 93°, low 63°.

Pressure29.91 inHg
Wind15.9 mph NE
Humidity17%
Visibility—
Dew point34°
Tue, 1881° / 62°0.07Light rain
81 °Light rain

Great Falls, Tuesday, 18 August

Light rain. High 81°, low 62°.

Pressure30.12 inHg
Wind12.9 mph W
Humidity76%
Visibility—
Dew point55°
Wed, 1988° / 65°0Light rain
88 °Light rain

Great Falls, Wednesday, 19 August

Light rain. High 88°, low 65°.

Pressure29.88 inHg
Wind22.8 mph W
Humidity26%
Visibility—
Dew point42°
Thu, 2090° / 61°0.01Light rain
90 °Light rain

Great Falls, Thursday, 20 August

Light rain. High 90°, low 61°.

Pressure29.80 inHg
Wind26.4 mph S
Humidity22%
Visibility—
Dew point38°
Fri, 2186° / 62°0Mostly clear
86 °Mostly clear

Great Falls, Friday, 21 August

Mostly clear. High 86°, low 62°.

Pressure29.80 inHg
Wind15.5 mph NW
Humidity23%
Visibility—
Dew point37°
Sat, 2286° / 55°0Clear
86 °Clear

Great Falls, Saturday, 22 August

Clear. High 86°, low 55°.

Pressure29.91 inHg
Wind12.2 mph NE
Humidity37%
Visibility—
Dew point43°
Sun, 2392° / 60°0Overcast
92 °Overcast

Great Falls, Sunday, 23 August

Overcast. High 92°, low 60°.

Pressure29.71 inHg
Wind19.4 mph W
Humidity11%
Visibility—
Dew point24°

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 Great Falls, 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 Great Falls, 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.