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As of 15:56 MDT

Weather in Halfmoon, MT

89°Current weather

Halfmoon, Saturday, 8 August, 15:56

Overcast. Feels like 85°. High 89°, low 52°.

Pressure29.83 inHg
Wind12.7 mph W
Humidity16%
Visibility6.2 mi
Dew point37°
Sun, 0985° / 50°0Clear
85 °Clear

Halfmoon, Sunday, 9 August

Clear. High 85°, low 50°.

Pressure29.91 inHg
Wind2.6 mph SW
Humidity21%
Visibility6.2 mi
Dew point37°
Mon, 1091° / 50°0Clear
91 °Clear

Halfmoon, Monday, 10 August

Clear. High 91°, low 50°.

Pressure29.85 inHg
Wind2.2 mph SE
Humidity20%
Visibility6.2 mi
Dew point36°
Tue, 1190° / 51°0Clear
90 °Clear

Halfmoon, Tuesday, 11 August

Clear. High 90°, low 51°.

Pressure29.97 inHg
Wind2.8 mph SW
Humidity23%
Visibility6.2 mi
Dew point39°
Wed, 1290° / 53°0Mostly clear
90 °Mostly clear

Halfmoon, Wednesday, 12 August

Mostly clear. High 90°, low 53°.

Pressure29.85 inHg
Wind1.2 mph SW
Humidity26%
Visibility6.2 mi
Dew point43°
Thu, 1387° / 53°0Clear
87 °Clear

Halfmoon, Thursday, 13 August

Clear. High 87°, low 53°.

Pressure29.85 inHg
Wind6 mph N
Humidity42%
Visibility—
Dew point48°
Fri, 1487° / 49°0Clear
87 °Clear

Halfmoon, Friday, 14 August

Clear. High 87°, low 49°.

Pressure29.91 inHg
Wind6.6 mph SE
Humidity22%
Visibility—
Dew point34°
Sat, 1586° / 51°0Overcast
86 °Overcast

Halfmoon, Saturday, 15 August

Overcast. High 86°, low 51°.

Pressure29.94 inHg
Wind7.4 mph SW
Humidity31%
Visibility—
Dew point43°
Sun, 1688° / 52°0Clear
88 °Clear

Halfmoon, Sunday, 16 August

Clear. High 88°, low 52°.

Pressure30.03 inHg
Wind15 mph W
Humidity27%
Visibility—
Dew point39°
Mon, 1793° / 52°0Clear
93 °Clear

Halfmoon, Monday, 17 August

Clear. High 93°, low 52°.

Pressure30.03 inHg
Wind12.3 mph W
Humidity24%
Visibility—
Dew point38°
Tue, 1881° / 57°0Overcast
81 °Overcast

Halfmoon, Tuesday, 18 August

Overcast. High 81°, low 57°.

Pressure30.03 inHg
Wind13.2 mph S
Humidity36%
Visibility—
Dew point46°
Wed, 1987° / 50°0Overcast
87 °Overcast

Halfmoon, Wednesday, 19 August

Overcast. High 87°, low 50°.

Pressure30.09 inHg
Wind6.1 mph SE
Humidity41%
Visibility—
Dew point46°
Thu, 2093° / 57°0Overcast
93 °Overcast

Halfmoon, Thursday, 20 August

Overcast. High 93°, low 57°.

Pressure29.91 inHg
Wind13.7 mph W
Humidity20%
Visibility—
Dew point36°
Fri, 2194° / 56°0Clear
94 °Clear

Halfmoon, Friday, 21 August

Clear. High 94°, low 56°.

Pressure29.94 inHg
Wind9.1 mph SW
Humidity22%
Visibility—
Dew point38°
Sat, 2295° / 57°0Mostly clear
95 °Mostly clear

Halfmoon, Saturday, 22 August

Mostly clear. High 95°, low 57°.

Pressure29.97 inHg
Wind8.2 mph S
Humidity22%
Visibility—
Dew point40°
Sun, 2397° / 58°0Partly cloudy
97 °Partly cloudy

Halfmoon, Sunday, 23 August

Partly cloudy. High 97°, low 58°.

Pressure29.97 inHg
Wind7.5 mph NE
Humidity30%
Visibility—
Dew point48°

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 Halfmoon, 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 Halfmoon, 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.