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As of 15:40 MDT

Weather in Harrison Mill, MT

89°Current weather

Harrison Mill, Saturday, 8 August, 15:40

Clear. Feels like 85°. High 89°, low 55°.

Pressure29.74 inHg
Wind16.2 mph NW
Humidity13%
Visibility6.2 mi
Dew point32°
Sun, 0985° / 54°0Mostly clear
85 °Mostly clear

Harrison Mill, Sunday, 9 August

Mostly clear. High 85°, low 54°.

Pressure29.85 inHg
Wind8.6 mph NE
Humidity12%
Visibility6.2 mi
Dew point26°
Mon, 1096° / 52°0Clear
96 °Clear

Harrison Mill, Monday, 10 August

Clear. High 96°, low 52°.

Pressure29.83 inHg
Wind8.4 mph N
Humidity13%
Visibility6.2 mi
Dew point28°
Tue, 1193° / 59°0Clear
93 °Clear

Harrison Mill, Tuesday, 11 August

Clear. High 93°, low 59°.

Pressure29.91 inHg
Wind8.2 mph NE
Humidity12%
Visibility6.2 mi
Dew point24°
Wed, 1293° / 59°0Clear
93 °Clear

Harrison Mill, Wednesday, 12 August

Clear. High 93°, low 59°.

Pressure29.80 inHg
Wind7.9 mph NE
Humidity17%
Visibility6.2 mi
Dew point34°
Thu, 1393° / 57°0.01Light rain
93 °Light rain

Harrison Mill, Thursday, 13 August

Light rain. High 93°, low 57°.

Pressure29.80 inHg
Wind6.8 mph NE
Humidity21%
Visibility—
Dew point35°
Fri, 1493° / 68°0Overcast
93 °Overcast

Harrison Mill, Friday, 14 August

Overcast. High 93°, low 68°.

Pressure29.80 inHg
Wind19.6 mph NE
Humidity13%
Visibility—
Dew point30°
Sat, 1584° / 59°0.06Light rain
84 °Light rain

Harrison Mill, Saturday, 15 August

Light rain. High 84°, low 59°.

Pressure30.00 inHg
Wind20 mph NW
Humidity33%
Visibility—
Dew point43°
Sun, 1684° / 56°0Clear
84 °Clear

Harrison Mill, Sunday, 16 August

Clear. High 84°, low 56°.

Pressure30.00 inHg
Wind17.3 mph SW
Humidity24%
Visibility—
Dew point39°
Mon, 1792° / 59°0Overcast
92 °Overcast

Harrison Mill, Monday, 17 August

Overcast. High 92°, low 59°.

Pressure30.00 inHg
Wind10 mph N
Humidity17%
Visibility—
Dew point32°
Tue, 1885° / 60°0.02Light rain
85 °Light rain

Harrison Mill, Tuesday, 18 August

Light rain. High 85°, low 60°.

Pressure29.91 inHg
Wind28.8 mph W
Humidity19%
Visibility—
Dew point33°
Wed, 1985° / 54°0Clear
85 °Clear

Harrison Mill, Wednesday, 19 August

Clear. High 85°, low 54°.

Pressure30.03 inHg
Wind11.5 mph NE
Humidity29%
Visibility—
Dew point39°
Thu, 2092° / 58°0Partly cloudy
92 °Partly cloudy

Harrison Mill, Thursday, 20 August

Partly cloudy. High 92°, low 58°.

Pressure29.88 inHg
Wind7 mph N
Humidity16%
Visibility—
Dew point30°
Fri, 2195° / 63°0Clear
95 °Clear

Harrison Mill, Friday, 21 August

Clear. High 95°, low 63°.

Pressure29.88 inHg
Wind12 mph N
Humidity14%
Visibility—
Dew point30°
Sat, 2295° / 62°0Clear
95 °Clear

Harrison Mill, Saturday, 22 August

Clear. High 95°, low 62°.

Pressure29.91 inHg
Wind17.5 mph NE
Humidity18%
Visibility—
Dew point35°
Sun, 2394° / 63°0Partly cloudy
94 °Partly cloudy

Harrison Mill, Sunday, 23 August

Partly cloudy. High 94°, low 63°.

Pressure29.97 inHg
Wind14.5 mph NE
Humidity25%
Visibility—
Dew point42°

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 Harrison Mill, 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 Harrison Mill, 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.