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As of 00:46 CDT

Weather in Decatur, IL

71°Current weather

Decatur, Sunday, 9 August, 00:46

Clear. Feels like 73°. High 93°, low 71°.

Pressure30.03 inHg
Wind4 mph SE
Humidity92%
Visibility6.2 mi
Dew point69°

Two-week outlook for Decatur, IL: week one averages a high of 84° and week two 77.6°, so week two runs 6.5° cooler than week one. Around 3.0 inches of precipitation are expected over the 14 days, across 8 wet days. The nearest weekend, August 9: 93°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)84°69.1°2.8 in / 5 d—
2nd (August 16 – August 22)77.6°60°0.2 in / 3 d—

Weekend weather

Sun, August 9
Mostly clear
93°71°
no precip.
Sat, August 15
Light rain
68°63°
0.04 in
Sun, August 16
Light rain
74°62°
0.06 in
Sat, August 22
Light rain
79°60°
0.07 in
Mon, 1091° / 76°0.06Light rain
91 °Light rain

Decatur, Monday, 10 August

Light rain. High 91°, low 76°.

Pressure29.94 inHg
Wind14.3 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°
Tue, 1192° / 74°0.04Light rain
92 °Light rain

Decatur, Tuesday, 11 August

Light rain. High 92°, low 74°.

Pressure29.83 inHg
Wind16.3 mph SW
Humidity55%
Visibility6.2 mi
Dew point70°
Wed, 1284° / 72°0.83Heavy rain
84 °Heavy rain

Decatur, Wednesday, 12 August

Heavy rain. High 84°, low 72°.

Pressure29.85 inHg
Wind2.1 mph NW
Humidity80%
Visibility6.2 mi
Dew point75°
Thu, 1382° / 64°1.8Heavy rain
82 °Heavy rain

Decatur, Thursday, 13 August

Heavy rain. High 82°, low 64°.

Pressure29.94 inHg
Wind13.9 mph SE
Humidity65%
Visibility—
Dew point67°
Fri, 1478° / 64°0.02Light rain
78 °Light rain

Decatur, Friday, 14 August

Light rain. High 78°, low 64°.

Pressure30.06 inHg
Wind12.2 mph E
Humidity71%
Visibility—
Dew point65°
Sat, 1568° / 63°0.04Light rain
68 °Light rain

Decatur, Saturday, 15 August

Light rain. High 68°, low 63°.

Pressure30.24 inHg
Wind15.3 mph E
Humidity80%
Visibility—
Dew point58°
Sun, 1674° / 62°0.06Light rain
74 °Light rain

Decatur, Sunday, 16 August

Light rain. High 74°, low 62°.

Pressure30.12 inHg
Wind10.4 mph E
Humidity84%
Visibility—
Dew point64°
Mon, 1778° / 64°0.06Light rain
78 °Light rain

Decatur, Monday, 17 August

Light rain. High 78°, low 64°.

Pressure30.06 inHg
Wind6.3 mph N
Humidity82%
Visibility—
Dew point67°
Tue, 1882° / 65°0Overcast
82 °Overcast

Decatur, Tuesday, 18 August

Overcast. High 82°, low 65°.

Pressure30.03 inHg
Wind5.9 mph SE
Humidity70%
Visibility—
Dew point67°
Wed, 1984° / 61°0Overcast
84 °Overcast

Decatur, Wednesday, 19 August

Overcast. High 84°, low 61°.

Pressure29.91 inHg
Wind13.7 mph N
Humidity71%
Visibility—
Dew point72°
Thu, 2073° / 54°0Light rain
73 °Light rain

Decatur, Thursday, 20 August

Light rain. High 73°, low 54°.

Pressure30.03 inHg
Wind12.5 mph NE
Humidity64%
Visibility—
Dew point56°
Fri, 2173° / 53°0Overcast
73 °Overcast

Decatur, Friday, 21 August

Overcast. High 73°, low 53°.

Pressure30.06 inHg
Wind10.8 mph E
Humidity56%
Visibility—
Dew point53°
Sat, 2279° / 60°0.07Light rain
79 °Light rain

Decatur, Saturday, 22 August

Light rain. High 79°, low 60°.

Pressure29.85 inHg
Wind14.5 mph S
Humidity68%
Visibility—
Dew point65°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Decatur, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.