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As of 17:47 CDT

Weather in Gretna, MO

66°Current weather

Gretna, Sunday, 18 October, 17:47

Clear. Feels like 65°. High 68°, low 41°.

Pressure30.30 inHg
Wind8.1 mph E
Humidity38%
Visibility6.2 mi
Dew point40°
Mon, 1971° / 43°0Mostly clear
71 °Mostly clear

Gretna, Monday, 19 October

Mostly clear. High 71°, low 43°.

Pressure30.36 inHg
Wind3.2 mph SE
Humidity47%
Visibility6.2 mi
Dew point44°
Tue, 2070° / 46°0Partly cloudy
70 °Partly cloudy

Gretna, Tuesday, 20 October

Partly cloudy. High 70°, low 46°.

Pressure30.33 inHg
Wind4.3 mph SE
Humidity45%
Visibility6.2 mi
Dew point44°
Wed, 2173° / 51°0Clear
73 °Clear

Gretna, Wednesday, 21 October

Clear. High 73°, low 51°.

Pressure30.30 inHg
Wind2.6 mph SE
Humidity44%
Visibility6.2 mi
Dew point47°
Thu, 2273° / 51°0Clear
73 °Clear

Gretna, Thursday, 22 October

Clear. High 73°, low 51°.

Pressure30.27 inHg
Wind3.5 mph SE
Humidity49%
Visibility6.2 mi
Dew point49°
Fri, 2372° / 51°0Mostly clear
72 °Mostly clear

Gretna, Friday, 23 October

Mostly clear. High 72°, low 51°.

Pressure30.21 inHg
Wind7.9 mph SE
Humidity47%
Visibility—
Dew point46°
Sat, 2480° / 52°0Overcast
80 °Overcast

Gretna, Saturday, 24 October

Overcast. High 80°, low 52°.

Pressure30.27 inHg
Wind6.4 mph SE
Humidity31%
Visibility—
Dew point42°
Sun, 2579° / 56°0Overcast
79 °Overcast

Gretna, Sunday, 25 October

Overcast. High 79°, low 56°.

Pressure30.33 inHg
Wind4.7 mph E
Humidity29%
Visibility—
Dew point41°
Mon, 2674° / 56°0Overcast
74 °Overcast

Gretna, Monday, 26 October

Overcast. High 74°, low 56°.

Pressure30.27 inHg
Wind4.6 mph SE
Humidity36%
Visibility—
Dew point42°
Tue, 2772° / 56°0Overcast
72 °Overcast

Gretna, Tuesday, 27 October

Overcast. High 72°, low 56°.

Pressure30.21 inHg
Wind6.8 mph S
Humidity34%
Visibility—
Dew point40°
Wed, 2870° / 56°0.01Light rain
70 °Light rain

Gretna, Wednesday, 28 October

Light rain. High 70°, low 56°.

Pressure30.18 inHg
Wind5.8 mph SE
Humidity56%
Visibility—
Dew point48°
Thu, 2966° / 56°0.36Rain
66 °Rain

Gretna, Thursday, 29 October

Rain. High 66°, low 56°.

Pressure30.03 inHg
Wind5.9 mph SE
Humidity92%
Visibility—
Dew point59°
Fri, 3076° / 62°0.5Rain
76 °Rain

Gretna, Friday, 30 October

Rain. High 76°, low 62°.

Pressure29.94 inHg
Wind4.2 mph NW
Humidity69%
Visibility—
Dew point63°
Sat, 3170° / 59°0.01Light rain
70 °Light rain

Gretna, Saturday, 31 October

Light rain. High 70°, low 59°.

Pressure30.03 inHg
Wind7.8 mph E
Humidity76%
Visibility—
Dew point61°
Sun, 0181° / 64°0.38Rain
81 °Rain

Gretna, Sunday, 1 November

Rain. High 81°, low 64°.

Pressure29.83 inHg
Wind10.8 mph SW
Humidity58%
Visibility—
Dew point63°
Mon, 0267° / 45°0.81Heavy rain
67 °Heavy rain

Gretna, Monday, 2 November

Heavy rain. High 67°, low 45°.

Pressure30.09 inHg
Wind10.2 mph NW
Humidity92%
Visibility—
Dew point51°

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.