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As of 20:06 MDT

Weather in Tattnall, MT

79°Current weather

Tattnall, Saturday, 8 August, 20:06

Overcast. Feels like 78°. High 88°, low 58°.

Pressure29.85 inHg
Wind11.6 mph N
Humidity32%
Visibility6.2 mi
Dew point47°
Sun, 0988° / 59°0Clear
88 °Clear

Tattnall, Sunday, 9 August

Clear. High 88°, low 59°.

Pressure29.85 inHg
Wind12.4 mph SE
Humidity30%
Visibility6.2 mi
Dew point47°
Mon, 1085° / 53°0Mostly clear
85 °Mostly clear

Tattnall, Monday, 10 August

Mostly clear. High 85°, low 53°.

Pressure29.91 inHg
Wind10.8 mph E
Humidity36%
Visibility6.2 mi
Dew point48°
Tue, 1188° / 61°0Clear
88 °Clear

Tattnall, Tuesday, 11 August

Clear. High 88°, low 61°.

Pressure29.91 inHg
Wind7.2 mph SE
Humidity28%
Visibility6.2 mi
Dew point44°
Wed, 1286° / 61°0Partly cloudy
86 °Partly cloudy

Tattnall, Wednesday, 12 August

Partly cloudy. High 86°, low 61°.

Pressure29.91 inHg
Wind16.4 mph E
Humidity30%
Visibility6.2 mi
Dew point46°
Thu, 1385° / 63°1.27Heavy rain
85 °Heavy rain

Tattnall, Thursday, 13 August

Heavy rain. High 85°, low 63°.

Pressure29.91 inHg
Wind24.3 mph E
Humidity44%
Visibility—
Dew point52°
Fri, 1477° / 62°0.24Rain
77 °Rain

Tattnall, Friday, 14 August

Rain. High 77°, low 62°.

Pressure30.00 inHg
Wind17.7 mph SE
Humidity63%
Visibility—
Dew point56°
Sat, 1576° / 58°0Clear
76 °Clear

Tattnall, Saturday, 15 August

Clear. High 76°, low 58°.

Pressure30.18 inHg
Wind13.2 mph N
Humidity44%
Visibility—
Dew point45°
Sun, 1687° / 63°0.01Light rain
87 °Light rain

Tattnall, Sunday, 16 August

Light rain. High 87°, low 63°.

Pressure29.97 inHg
Wind11.3 mph SE
Humidity39%
Visibility—
Dew point51°
Mon, 1785° / 71°0Overcast
85 °Overcast

Tattnall, Monday, 17 August

Overcast. High 85°, low 71°.

Pressure29.88 inHg
Wind14 mph NW
Humidity34%
Visibility—
Dew point49°
Tue, 1870° / 62°0.01Light rain
70 °Light rain

Tattnall, Tuesday, 18 August

Light rain. High 70°, low 62°.

Pressure30.12 inHg
Wind11.5 mph NE
Humidity50%
Visibility—
Dew point48°
Wed, 1976° / 60°0Overcast
76 °Overcast

Tattnall, Wednesday, 19 August

Overcast. High 76°, low 60°.

Pressure30.03 inHg
Wind19.9 mph E
Humidity54%
Visibility—
Dew point51°
Thu, 2085° / 62°0.01Light rain
85 °Light rain

Tattnall, Thursday, 20 August

Light rain. High 85°, low 62°.

Pressure29.83 inHg
Wind17.3 mph SE
Humidity39%
Visibility—
Dew point50°
Fri, 2180° / 70°0.02Light rain
80 °Light rain

Tattnall, Friday, 21 August

Light rain. High 80°, low 70°.

Pressure29.71 inHg
Wind18.9 mph NW
Humidity38%
Visibility—
Dew point49°
Sat, 2279° / 58°0.08Light rain
79 °Light rain

Tattnall, Saturday, 22 August

Light rain. High 79°, low 58°.

Pressure29.94 inHg
Wind13.9 mph NW
Humidity33%
Visibility—
Dew point39°
Sun, 2390° / 64°0Overcast
90 °Overcast

Tattnall, Sunday, 23 August

Overcast. High 90°, low 64°.

Pressure29.71 inHg
Wind15.5 mph W
Humidity26%
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 Tattnall, 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 Tattnall, 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.