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As of 23:18 CDT

Weather in Gretna, MO

46°Current weather

Gretna, Saturday, 17 October, 23:18

Clear. Feels like 44°. High 63°, low 40°.

Pressure30.45 inHg
Wind3.4 mph S
Humidity80%
Visibility6.2 mi
Dew point40°
Sun, 1867° / 43°0Clear
67 °Clear

Gretna, Sunday, 18 October

Clear. High 67°, low 43°.

Pressure30.42 inHg
Wind5.2 mph SE
Humidity45%
Visibility6.2 mi
Dew point38°
Mon, 1968° / 44°0Clear
68 °Clear

Gretna, Monday, 19 October

Clear. High 68°, low 44°.

Pressure30.36 inHg
Wind3.1 mph SE
Humidity48%
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
Wind3.8 mph SE
Humidity44%
Visibility6.2 mi
Dew point44°
Wed, 2172° / 48°0Clear
72 °Clear

Gretna, Wednesday, 21 October

Clear. High 72°, low 48°.

Pressure30.27 inHg
Wind2.6 mph SE
Humidity48%
Visibility6.2 mi
Dew point46°
Thu, 2275° / 51°0Clear
75 °Clear

Gretna, Thursday, 22 October

Clear. High 75°, low 51°.

Pressure30.21 inHg
Wind3.6 mph E
Humidity38%
Visibility—
Dew point44°
Fri, 2376° / 52°0Clear
76 °Clear

Gretna, Friday, 23 October

Clear. High 76°, low 52°.

Pressure30.21 inHg
Wind7 mph SE
Humidity41%
Visibility—
Dew point46°
Sat, 2482° / 55°0Overcast
82 °Overcast

Gretna, Saturday, 24 October

Overcast. High 82°, low 55°.

Pressure30.21 inHg
Wind5.5 mph S
Humidity25%
Visibility—
Dew point39°
Sun, 2571° / 54°0Overcast
71 °Overcast

Gretna, Sunday, 25 October

Overcast. High 71°, low 54°.

Pressure30.36 inHg
Wind7.3 mph N
Humidity48%
Visibility—
Dew point48°
Mon, 2670° / 48°0Overcast
70 °Overcast

Gretna, Monday, 26 October

Overcast. High 70°, low 48°.

Pressure30.36 inHg
Wind5.7 mph E
Humidity41%
Visibility—
Dew point40°
Tue, 2773° / 52°0Overcast
73 °Overcast

Gretna, Tuesday, 27 October

Overcast. High 73°, low 52°.

Pressure30.24 inHg
Wind5.4 mph S
Humidity35%
Visibility—
Dew point41°
Wed, 2876° / 58°0Overcast
76 °Overcast

Gretna, Wednesday, 28 October

Overcast. High 76°, low 58°.

Pressure30.09 inHg
Wind10.3 mph S
Humidity33%
Visibility—
Dew point43°
Thu, 2978° / 60°0.13Light rain
78 °Light rain

Gretna, Thursday, 29 October

Light rain. High 78°, low 60°.

Pressure29.91 inHg
Wind12.9 mph SW
Humidity45%
Visibility—
Dew point53°
Fri, 3075° / 59°0.17Light rain
75 °Light rain

Gretna, Friday, 30 October

Light rain. High 75°, low 59°.

Pressure29.94 inHg
Wind9.4 mph S
Humidity62%
Visibility—
Dew point59°
Sat, 3164° / 60°1.91Heavy rain
64 °Heavy rain

Gretna, Saturday, 31 October

Heavy rain. High 64°, low 60°.

Pressure29.85 inHg
Wind7 mph SE
Humidity99%
Visibility—
Dew point64°
Sun, 0175° / 57°0.21Light rain
75 °Light rain

Gretna, Sunday, 1 November

Light rain. High 75°, low 57°.

Pressure30.00 inHg
Wind5.3 mph SW
Humidity38%
Visibility—
Dew point44°

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.