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As of 18:59 EDT

Weather in Decatur, MI

79°Current weather

Decatur, Saturday, 8 August, 18:59

Clear. Feels like 79°. High 82°, low 70°.

Pressure29.97 inHg
Wind9.7 mph NW
Humidity60%
Visibility6.2 mi
Dew point63°
Sun, 0981° / 64°0.57Rain
81 °Rain

Decatur, Sunday, 9 August

Rain. High 81°, low 64°.

Pressure29.97 inHg
Wind11.8 mph S
Humidity49%
Visibility6.2 mi
Dew point62°
Mon, 1083° / 70°0.61Rain
83 °Rain

Decatur, Monday, 10 August

Rain. High 83°, low 70°.

Pressure29.94 inHg
Wind8.7 mph SW
Humidity91%
Visibility6.2 mi
Dew point70°
Tue, 1182° / 69°0.64Heavy rain
82 °Heavy rain

Decatur, Tuesday, 11 August

Heavy rain. High 82°, low 69°.

Pressure29.80 inHg
Wind10.7 mph SW
Humidity95%
Visibility6.0 mi
Dew point72°
Wed, 1282° / 65°0.04Light rain
82 °Light rain

Decatur, Wednesday, 12 August

Light rain. High 82°, low 65°.

Pressure29.83 inHg
Wind3.3 mph N
Humidity59%
Visibility6.2 mi
Dew point64°
Thu, 1371° / 58°0.04Light rain
71 °Light rain

Decatur, Thursday, 13 August

Light rain. High 71°, low 58°.

Pressure29.97 inHg
Wind14 mph NE
Humidity75%
Visibility—
Dew point57°
Fri, 1472° / 52°0Clear
72 °Clear

Decatur, Friday, 14 August

Clear. High 72°, low 52°.

Pressure30.15 inHg
Wind14 mph NW
Humidity42%
Visibility—
Dew point45°
Sat, 1576° / 54°0Overcast
76 °Overcast

Decatur, Saturday, 15 August

Overcast. High 76°, low 54°.

Pressure30.30 inHg
Wind7.8 mph NW
Humidity40%
Visibility—
Dew point48°
Sun, 1678° / 56°0Partly cloudy
78 °Partly cloudy

Decatur, Sunday, 16 August

Partly cloudy. High 78°, low 56°.

Pressure30.21 inHg
Wind10.9 mph S
Humidity46%
Visibility—
Dew point53°
Mon, 1775° / 60°0.01Light rain
75 °Light rain

Decatur, Monday, 17 August

Light rain. High 75°, low 60°.

Pressure30.03 inHg
Wind7.6 mph SW
Humidity76%
Visibility—
Dew point63°
Tue, 1885° / 65°0Partly cloudy
85 °Partly cloudy

Decatur, Tuesday, 18 August

Partly cloudy. High 85°, low 65°.

Pressure30.00 inHg
Wind10.9 mph N
Humidity46%
Visibility—
Dew point59°
Wed, 1982° / 63°1.44Heavy rain
82 °Heavy rain

Decatur, Wednesday, 19 August

Heavy rain. High 82°, low 63°.

Pressure29.94 inHg
Wind11.2 mph S
Humidity51%
Visibility—
Dew point60°
Thu, 2080° / 67°0.2Rain
80 °Rain

Decatur, Thursday, 20 August

Rain. High 80°, low 67°.

Pressure29.85 inHg
Wind9.2 mph S
Humidity65%
Visibility—
Dew point65°
Fri, 2179° / 58°0Overcast
79 °Overcast

Decatur, Friday, 21 August

Overcast. High 79°, low 58°.

Pressure29.94 inHg
Wind11.5 mph NW
Humidity55%
Visibility—
Dew point59°
Sat, 2266° / 57°0.09Light rain
66 °Light rain

Decatur, Saturday, 22 August

Light rain. High 66°, low 57°.

Pressure29.91 inHg
Wind13.3 mph N
Humidity97%
Visibility—
Dew point63°
Sun, 2368° / 43°0Clear
68 °Clear

Decatur, Sunday, 23 August

Clear. High 68°, low 43°.

Pressure30.24 inHg
Wind10.8 mph NE
Humidity43%
Visibility—
Dew point40°

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 Decatur, MI 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 Decatur, MI 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.