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As of 12:27 MDT

Weather in Simpson, MT

74°Current weather

Simpson, Saturday, 8 August, 12:27

Partly cloudy. Feels like 73°. High 85°, low 53°.

Pressure29.94 inHg
Wind7.5 mph N
Humidity41%
Visibility6.2 mi
Dew point48°
Sun, 0981° / 53°0Clear
81 °Clear

Simpson, Sunday, 9 August

Clear. High 81°, low 53°.

Pressure29.85 inHg
Wind18.7 mph NW
Humidity31%
Visibility6.2 mi
Dew point45°
Mon, 1083° / 46°0Clear
83 °Clear

Simpson, Monday, 10 August

Clear. High 83°, low 46°.

Pressure29.88 inHg
Wind10.6 mph E
Humidity35%
Visibility6.2 mi
Dew point46°
Tue, 1184° / 58°0Partly cloudy
84 °Partly cloudy

Simpson, Tuesday, 11 August

Partly cloudy. High 84°, low 58°.

Pressure29.94 inHg
Wind5.6 mph N
Humidity33%
Visibility6.2 mi
Dew point46°
Wed, 1284° / 63°0Overcast
84 °Overcast

Simpson, Wednesday, 12 August

Overcast. High 84°, low 63°.

Pressure29.91 inHg
Wind17.1 mph E
Humidity33%
Visibility6.2 mi
Dew point48°
Thu, 1387° / 59°0.4Rain
87 °Rain

Simpson, Thursday, 13 August

Rain. High 87°, low 59°.

Pressure29.91 inHg
Wind23.2 mph E
Humidity37%
Visibility—
Dew point46°
Fri, 1476° / 64°0.19Rain
76 °Rain

Simpson, Friday, 14 August

Rain. High 76°, low 64°.

Pressure29.94 inHg
Wind19.8 mph NW
Humidity56%
Visibility—
Dew point53°
Sat, 1576° / 58°0Overcast
76 °Overcast

Simpson, Saturday, 15 August

Overcast. High 76°, low 58°.

Pressure30.06 inHg
Wind11.4 mph N
Humidity39%
Visibility—
Dew point43°
Sun, 1687° / 63°0.02Light rain
87 °Light rain

Simpson, Sunday, 16 August

Light rain. High 87°, low 63°.

Pressure29.94 inHg
Wind11.8 mph W
Humidity42%
Visibility—
Dew point51°
Mon, 1783° / 67°0Partly cloudy
83 °Partly cloudy

Simpson, Monday, 17 August

Partly cloudy. High 83°, low 67°.

Pressure29.97 inHg
Wind16.6 mph NW
Humidity38%
Visibility—
Dew point50°
Tue, 1883° / 63°0Overcast
83 °Overcast

Simpson, Tuesday, 18 August

Overcast. High 83°, low 63°.

Pressure30.06 inHg
Wind10.2 mph E
Humidity35%
Visibility—
Dew point46°
Wed, 1988° / 66°0Overcast
88 °Overcast

Simpson, Wednesday, 19 August

Overcast. High 88°, low 66°.

Pressure30.00 inHg
Wind18 mph SE
Humidity27%
Visibility—
Dew point44°
Thu, 2094° / 67°0Clear
94 °Clear

Simpson, Thursday, 20 August

Clear. High 94°, low 67°.

Pressure29.85 inHg
Wind15.2 mph SE
Humidity34%
Visibility—
Dew point51°
Fri, 2196° / 69°0.02Light rain
96 °Light rain

Simpson, Friday, 21 August

Light rain. High 96°, low 69°.

Pressure29.80 inHg
Wind14.6 mph S
Humidity31%
Visibility—
Dew point50°
Sat, 2291° / 71°0.03Light rain
91 °Light rain

Simpson, Saturday, 22 August

Light rain. High 91°, low 71°.

Pressure29.80 inHg
Wind20.2 mph W
Humidity32%
Visibility—
Dew point50°
Sun, 2384° / 63°0Clear
84 °Clear

Simpson, Sunday, 23 August

Clear. High 84°, low 63°.

Pressure29.83 inHg
Wind16.2 mph W
Humidity14%
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 Simpson, 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 Simpson, 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.