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As of 10:40 CDT

Weather in Gretna, MO

67°Current weather

Gretna, Friday, 23 October, 10:40

Clear. Feels like 66°. High 78°, low 50°.

Pressure30.24 inHg
Wind4.6 mph SE
Humidity61%
Visibility6.2 mi
Dew point53°
Sat, 2480° / 46°0Overcast
80 °Overcast

Gretna, Saturday, 24 October

Overcast. High 80°, low 46°.

Pressure30.30 inHg
Wind4 mph SE
Humidity49%
Visibility6.2 mi
Dew point50°
Sun, 2576° / 50°0Overcast
76 °Overcast

Gretna, Sunday, 25 October

Overcast. High 76°, low 50°.

Pressure30.39 inHg
Wind3.3 mph SE
Humidity47%
Visibility6.2 mi
Dew point51°
Mon, 2673° / 52°0Overcast
73 °Overcast

Gretna, Monday, 26 October

Overcast. High 73°, low 52°.

Pressure30.33 inHg
Wind4 mph SE
Humidity42%
Visibility6.2 mi
Dew point46°
Tue, 2771° / 53°0Overcast
71 °Overcast

Gretna, Tuesday, 27 October

Overcast. High 71°, low 53°.

Pressure30.21 inHg
Wind5.7 mph E
Humidity40%
Visibility—
Dew point43°
Wed, 2878° / 52°0Clear
78 °Clear

Gretna, Wednesday, 28 October

Clear. High 78°, low 52°.

Pressure30.12 inHg
Wind6.7 mph SW
Humidity39%
Visibility—
Dew point46°
Thu, 2980° / 58°0Overcast
80 °Overcast

Gretna, Thursday, 29 October

Overcast. High 80°, low 58°.

Pressure30.12 inHg
Wind5.9 mph SW
Humidity36%
Visibility—
Dew point48°
Fri, 3062° / 56°0.77Rain
62 °Rain

Gretna, Friday, 30 October

Rain. High 62°, low 56°.

Pressure30.06 inHg
Wind9.6 mph SE
Humidity96%
Visibility—
Dew point60°
Sat, 3161° / 55°0.07Light rain
61 °Light rain

Gretna, Saturday, 31 October

Light rain. High 61°, low 55°.

Pressure30.03 inHg
Wind6.9 mph SE
Humidity87%
Visibility—
Dew point56°
Sun, 0171° / 56°0Overcast
71 °Overcast

Gretna, Sunday, 1 November

Overcast. High 71°, low 56°.

Pressure30.09 inHg
Wind4.2 mph SE
Humidity58%
Visibility—
Dew point53°
Mon, 0265° / 58°0.58Rain
65 °Rain

Gretna, Monday, 2 November

Rain. High 65°, low 58°.

Pressure29.91 inHg
Wind6.6 mph SE
Humidity95%
Visibility—
Dew point59°
Tue, 0381° / 66°0.62Rain
81 °Rain

Gretna, Tuesday, 3 November

Rain. High 81°, low 66°.

Pressure29.65 inHg
Wind11.1 mph SW
Humidity62%
Visibility—
Dew point64°
Wed, 0479° / 59°0.01Light rain
79 °Light rain

Gretna, Wednesday, 4 November

Light rain. High 79°, low 59°.

Pressure29.77 inHg
Wind6 mph SW
Humidity46%
Visibility—
Dew point52°
Thu, 0580° / 59°0Overcast
80 °Overcast

Gretna, Thursday, 5 November

Overcast. High 80°, low 59°.

Pressure29.85 inHg
Wind11.9 mph SW
Humidity36%
Visibility—
Dew point48°
Fri, 0678° / 54°0Overcast
78 °Overcast

Gretna, Friday, 6 November

Overcast. High 78°, low 54°.

Pressure30.00 inHg
Wind3.8 mph SW
Humidity39%
Visibility—
Dew point46°
Sat, 0779° / 55°0Overcast
79 °Overcast

Gretna, Saturday, 7 November

Overcast. High 79°, low 55°.

Pressure29.97 inHg
Wind5 mph W
Humidity35%
Visibility—
Dew point45°

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.