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As of 06:28 CDT

Weather in Gretna, IL

65°Current weather

Gretna, Sunday, 9 August, 06:28

Clear. Feels like 65°. High 83°, low 64°.

Pressure30.00 inHg
Wind4.6 mph S
Humidity90%
Visibility6.2 mi
Dew point61°

Two-week outlook for Gretna, IL: week one averages a high of 81° and week two 83.2°, so week two runs 2.2° warmer than week one. Around 1.7 inches of precipitation are expected over the 14 days, across 4 wet days. The nearest weekend, August 9: 83°, with precipitation.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)81°66.2°1.6 in / 3 d—
2nd (August 16 – August 22)83.2°68.9°0.1 in / 1 d—

Weekend weather

Sun, August 9
Heavy rain
83°64°
0.74 in
Sat, August 15
Overcast
78°64°
no precip.
Sun, August 16
Light rain
76°65°
no precip.
Sat, August 22
Clear
91°70°
no precip.
Mon, 1089° / 70°0.75Rain
89 °Rain

Gretna, Monday, 10 August

Rain. High 89°, low 70°.

Pressure29.88 inHg
Wind5.4 mph N
Humidity76%
Visibility6.2 mi
Dew point74°
Tue, 1180° / 69°0.06Light rain
80 °Light rain

Gretna, Tuesday, 11 August

Light rain. High 80°, low 69°.

Pressure29.85 inHg
Wind1.5 mph W
Humidity79%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 69°0.03Light rain
84 °Light rain

Gretna, Wednesday, 12 August

Light rain. High 84°, low 69°.

Pressure29.85 inHg
Wind5.7 mph W
Humidity62%
Visibility6.2 mi
Dew point68°
Thu, 1377° / 67°0Overcast
77 °Overcast

Gretna, Thursday, 13 August

Overcast. High 77°, low 67°.

Pressure30.00 inHg
Wind8.2 mph NE
Humidity51%
Visibility—
Dew point56°
Fri, 1475° / 61°0Overcast
75 °Overcast

Gretna, Friday, 14 August

Overcast. High 75°, low 61°.

Pressure30.15 inHg
Wind9.6 mph E
Humidity41%
Visibility—
Dew point48°
Sat, 1578° / 64°0Overcast
78 °Overcast

Gretna, Saturday, 15 August

Overcast. High 78°, low 64°.

Pressure30.24 inHg
Wind8.3 mph S
Humidity48%
Visibility—
Dew point53°
Sun, 1676° / 65°0.01Light rain
76 °Light rain

Gretna, Sunday, 16 August

Light rain. High 76°, low 65°.

Pressure30.09 inHg
Wind6.3 mph SE
Humidity65%
Visibility—
Dew point62°
Mon, 1782° / 65°0.02Light rain
82 °Light rain

Gretna, Monday, 17 August

Light rain. High 82°, low 65°.

Pressure30.06 inHg
Wind7.7 mph E
Humidity59%
Visibility—
Dew point63°
Tue, 1878° / 66°0Overcast
78 °Overcast

Gretna, Tuesday, 18 August

Overcast. High 78°, low 66°.

Pressure30.03 inHg
Wind6.7 mph SW
Humidity76%
Visibility—
Dew point65°
Wed, 1985° / 67°0.11Light rain
85 °Light rain

Gretna, Wednesday, 19 August

Light rain. High 85°, low 67°.

Pressure29.91 inHg
Wind15 mph S
Humidity62%
Visibility—
Dew point67°
Thu, 2084° / 74°0Overcast
84 °Overcast

Gretna, Thursday, 20 August

Overcast. High 84°, low 74°.

Pressure29.77 inHg
Wind7.7 mph S
Humidity71%
Visibility—
Dew point72°
Fri, 2186° / 74°0Clear
86 °Clear

Gretna, Friday, 21 August

Clear. High 86°, low 74°.

Pressure29.91 inHg
Wind13.1 mph NE
Humidity43%
Visibility—
Dew point60°
Sat, 2291° / 70°0Clear
91 °Clear

Gretna, Saturday, 22 August

Clear. High 91°, low 70°.

Pressure29.85 inHg
Wind11.1 mph S
Humidity58%
Visibility—
Dew point69°

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 Gretna, 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.