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As of 15:34 MDT

Weather in Arnold, MT

92°Current weather

Arnold, Saturday, 8 August, 15:34

Clear. Feels like 88°. High 92°, low 56°.

Pressure29.74 inHg
Wind16 mph NW
Humidity15%
Visibility6.2 mi
Dew point40°
Sun, 0984° / 54°0Mostly clear
84 °Mostly clear

Arnold, Sunday, 9 August

Mostly clear. High 84°, low 54°.

Pressure29.85 inHg
Wind6.7 mph N
Humidity11%
Visibility6.2 mi
Dew point25°
Mon, 1097° / 50°0Clear
97 °Clear

Arnold, Monday, 10 August

Clear. High 97°, low 50°.

Pressure29.80 inHg
Wind8.3 mph N
Humidity13%
Visibility6.2 mi
Dew point29°
Tue, 1192° / 55°0Clear
92 °Clear

Arnold, Tuesday, 11 August

Clear. High 92°, low 55°.

Pressure29.91 inHg
Wind5.1 mph N
Humidity11%
Visibility6.2 mi
Dew point23°
Wed, 1293° / 55°0Clear
93 °Clear

Arnold, Wednesday, 12 August

Clear. High 93°, low 55°.

Pressure29.80 inHg
Wind5.7 mph N
Humidity16%
Visibility6.2 mi
Dew point34°
Thu, 1394° / 55°0.01Light rain
94 °Light rain

Arnold, Thursday, 13 August

Light rain. High 94°, low 55°.

Pressure29.80 inHg
Wind11.5 mph S
Humidity19%
Visibility—
Dew point35°
Fri, 1495° / 64°0Overcast
95 °Overcast

Arnold, Friday, 14 August

Overcast. High 95°, low 64°.

Pressure29.80 inHg
Wind26.6 mph N
Humidity15%
Visibility—
Dew point33°
Sat, 1584° / 57°0.09Light rain
84 °Light rain

Arnold, Saturday, 15 August

Light rain. High 84°, low 57°.

Pressure30.03 inHg
Wind7.1 mph NE
Humidity44%
Visibility—
Dew point44°
Sun, 1691° / 54°0Light rain
91 °Light rain

Arnold, Sunday, 16 August

Light rain. High 91°, low 54°.

Pressure30.00 inHg
Wind27.3 mph S
Humidity30%
Visibility—
Dew point44°
Mon, 1793° / 56°0Partly cloudy
93 °Partly cloudy

Arnold, Monday, 17 August

Partly cloudy. High 93°, low 56°.

Pressure30.00 inHg
Wind11.1 mph N
Humidity18%
Visibility—
Dew point34°
Tue, 1891° / 60°0.02Light rain
91 °Light rain

Arnold, Tuesday, 18 August

Light rain. High 91°, low 60°.

Pressure29.88 inHg
Wind16.8 mph SW
Humidity18%
Visibility—
Dew point34°
Wed, 1985° / 52°0Clear
85 °Clear

Arnold, Wednesday, 19 August

Clear. High 85°, low 52°.

Pressure30.03 inHg
Wind7.7 mph N
Humidity29%
Visibility—
Dew point40°
Thu, 2093° / 56°0Partly cloudy
93 °Partly cloudy

Arnold, Thursday, 20 August

Partly cloudy. High 93°, low 56°.

Pressure29.91 inHg
Wind9.1 mph N
Humidity15%
Visibility—
Dew point28°
Fri, 2195° / 60°0Clear
95 °Clear

Arnold, Friday, 21 August

Clear. High 95°, low 60°.

Pressure29.88 inHg
Wind12.7 mph N
Humidity14%
Visibility—
Dew point29°
Sat, 2295° / 59°0Mostly clear
95 °Mostly clear

Arnold, Saturday, 22 August

Mostly clear. High 95°, low 59°.

Pressure29.91 inHg
Wind12.1 mph NE
Humidity17%
Visibility—
Dew point34°
Sun, 2395° / 60°0Mostly clear
95 °Mostly clear

Arnold, Sunday, 23 August

Mostly clear. High 95°, low 60°.

Pressure29.97 inHg
Wind12 mph E
Humidity24%
Visibility—
Dew point41°

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 Arnold, 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 Arnold, 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.