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As of 21:51 CDT

Weather in Gretna, MO

72°Current weather

Gretna, Thursday, 15 October, 21:51

Overcast. Feels like 72°. High 81°, low 70°.

Pressure30.06 inHg
Wind10.4 mph NW
Humidity83%
Visibility6.2 mi
Dew point66°
Fri, 1668° / 50°0.02Light rain
68 °Light rain

Gretna, Friday, 16 October

Light rain. High 68°, low 50°.

Pressure30.39 inHg
Wind18.1 mph NW
Humidity48%
Visibility6.2 mi
Dew point36°
Sat, 1760° / 42°0Clear
60 °Clear

Gretna, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.56 inHg
Wind4.7 mph E
Humidity49%
Visibility6.2 mi
Dew point37°
Sun, 1864° / 43°0Clear
64 °Clear

Gretna, Sunday, 18 October

Clear. High 64°, low 43°.

Pressure30.47 inHg
Wind5.3 mph SE
Humidity48%
Visibility6.2 mi
Dew point39°
Mon, 1969° / 44°0Clear
69 °Clear

Gretna, Monday, 19 October

Clear. High 69°, low 44°.

Pressure30.33 inHg
Wind4.7 mph SE
Humidity47%
Visibility6.2 mi
Dew point43°
Tue, 2070° / 46°0Clear
70 °Clear

Gretna, Tuesday, 20 October

Clear. High 70°, low 46°.

Pressure30.27 inHg
Wind6.8 mph SE
Humidity35%
Visibility—
Dew point37°
Wed, 2175° / 47°0Partly cloudy
75 °Partly cloudy

Gretna, Wednesday, 21 October

Partly cloudy. High 75°, low 47°.

Pressure30.24 inHg
Wind4.3 mph SE
Humidity34%
Visibility—
Dew point39°
Thu, 2281° / 53°0Clear
81 °Clear

Gretna, Thursday, 22 October

Clear. High 81°, low 53°.

Pressure30.21 inHg
Wind5.1 mph SE
Humidity24%
Visibility—
Dew point36°
Fri, 2379° / 55°0Overcast
79 °Overcast

Gretna, Friday, 23 October

Overcast. High 79°, low 55°.

Pressure30.06 inHg
Wind8.6 mph SE
Humidity26%
Visibility—
Dew point36°
Sat, 2483° / 56°0Overcast
83 °Overcast

Gretna, Saturday, 24 October

Overcast. High 83°, low 56°.

Pressure30.12 inHg
Wind3.4 mph S
Humidity28%
Visibility—
Dew point42°
Sun, 2578° / 56°0Overcast
78 °Overcast

Gretna, Sunday, 25 October

Overcast. High 78°, low 56°.

Pressure30.15 inHg
Wind4.7 mph SE
Humidity32%
Visibility—
Dew point42°
Mon, 2677° / 52°0Overcast
77 °Overcast

Gretna, Monday, 26 October

Overcast. High 77°, low 52°.

Pressure29.97 inHg
Wind11.9 mph W
Humidity40%
Visibility—
Dew point49°
Tue, 2773° / 41°0Overcast
73 °Overcast

Gretna, Tuesday, 27 October

Overcast. High 73°, low 41°.

Pressure30.09 inHg
Wind4.7 mph W
Humidity33%
Visibility—
Dew point33°
Wed, 2863° / 48°0.15Light rain
63 °Light rain

Gretna, Wednesday, 28 October

Light rain. High 63°, low 48°.

Pressure29.88 inHg
Wind13.2 mph SW
Humidity78%
Visibility—
Dew point50°
Thu, 2973° / 41°0Mostly clear
73 °Mostly clear

Gretna, Thursday, 29 October

Mostly clear. High 73°, low 41°.

Pressure30.03 inHg
Wind4.8 mph W
Humidity31%
Visibility—
Dew point34°
Fri, 3077° / 48°0Clear
77 °Clear

Gretna, Friday, 30 October

Clear. High 77°, low 48°.

Pressure30.06 inHg
Wind2.5 mph E
Humidity26%
Visibility—
Dew point35°

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 Gretna, MO 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 Gretna, MO 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.