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As of 02:05 CDT

Weather in Gretna, MO

49°Current weather

Gretna, Saturday, 17 October, 02:05

Clear. Feels like 44°. High 59°, low 42°.

Pressure30.50 inHg
Wind12.7 mph NW
Humidity64%
Visibility6.2 mi
Dew point38°
Sun, 1864° / 44°0Clear
64 °Clear

Gretna, Sunday, 18 October

Clear. High 64°, low 44°.

Pressure30.45 inHg
Wind5.3 mph SE
Humidity48%
Visibility6.2 mi
Dew point40°
Mon, 1969° / 44°0Clear
69 °Clear

Gretna, Monday, 19 October

Clear. High 69°, low 44°.

Pressure30.36 inHg
Wind4.6 mph SE
Humidity46%
Visibility6.2 mi
Dew point43°
Tue, 2071° / 46°0Partly cloudy
71 °Partly cloudy

Gretna, Tuesday, 20 October

Partly cloudy. High 71°, low 46°.

Pressure30.33 inHg
Wind4.1 mph SE
Humidity47%
Visibility6.2 mi
Dew point44°
Wed, 2174° / 49°0Clear
74 °Clear

Gretna, Wednesday, 21 October

Clear. High 74°, low 49°.

Pressure30.27 inHg
Wind4.1 mph SE
Humidity38%
Visibility—
Dew point42°
Thu, 2278° / 52°0Clear
78 °Clear

Gretna, Thursday, 22 October

Clear. High 78°, low 52°.

Pressure30.18 inHg
Wind3.2 mph SE
Humidity34%
Visibility—
Dew point43°
Fri, 2381° / 55°0Partly cloudy
81 °Partly cloudy

Gretna, Friday, 23 October

Partly cloudy. High 81°, low 55°.

Pressure30.15 inHg
Wind6.3 mph SE
Humidity25%
Visibility—
Dew point37°
Sat, 2483° / 56°0Overcast
83 °Overcast

Gretna, Saturday, 24 October

Overcast. High 83°, low 56°.

Pressure30.18 inHg
Wind2.7 mph E
Humidity23%
Visibility—
Dew point38°
Sun, 2581° / 58°0Overcast
81 °Overcast

Gretna, Sunday, 25 October

Overcast. High 81°, low 58°.

Pressure30.21 inHg
Wind5.1 mph NE
Humidity29%
Visibility—
Dew point42°
Mon, 2682° / 57°0Overcast
82 °Overcast

Gretna, Monday, 26 October

Overcast. High 82°, low 57°.

Pressure30.21 inHg
Wind6.4 mph E
Humidity30%
Visibility—
Dew point42°
Tue, 2784° / 59°0Overcast
84 °Overcast

Gretna, Tuesday, 27 October

Overcast. High 84°, low 59°.

Pressure30.12 inHg
Wind6.9 mph SW
Humidity26%
Visibility—
Dew point42°
Wed, 2881° / 60°0Overcast
81 °Overcast

Gretna, Wednesday, 28 October

Overcast. High 81°, low 60°.

Pressure30.06 inHg
Wind5.1 mph W
Humidity40%
Visibility—
Dew point51°
Thu, 2973° / 61°0.38Rain
73 °Rain

Gretna, Thursday, 29 October

Rain. High 73°, low 61°.

Pressure29.74 inHg
Wind12.2 mph SW
Humidity77%
Visibility—
Dew point64°
Fri, 3070° / 52°0Clear
70 °Clear

Gretna, Friday, 30 October

Clear. High 70°, low 52°.

Pressure29.80 inHg
Wind13.2 mph NW
Humidity47%
Visibility—
Dew point47°
Sat, 3163° / 47°0Mostly clear
63 °Mostly clear

Gretna, Saturday, 31 October

Mostly clear. High 63°, low 47°.

Pressure30.24 inHg
Wind9.2 mph NW
Humidity37%
Visibility—
Dew point33°
Sun, 0167° / 41°0Clear
67 °Clear

Gretna, Sunday, 1 November

Clear. High 67°, low 41°.

Pressure30.21 inHg
Wind2.9 mph NW
Humidity35%
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.