As of 03:37 CDT

Weather in Gretna, MO

44°

Gretna, Monday, 19 October, 03:37

Mostly clear. Feels like 41°. High 72°, low 44°.

Pressure30.33 inHg

Wind5.7 mph SE

Humidity82%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Tue, 2075° / 47°

75 °

Gretna, Tuesday, 20 October

Partly cloudy. High 75°, low 47°.

Pressure30.33 inHg

Wind3.9 mph SE

Humidity44%

Visibility6.2 mi

Dew point45°

Wed, 2173° / 50°

73 °

Gretna, Wednesday, 21 October

Clear. High 73°, low 50°.

Pressure30.27 inHg

Wind1.7 mph S

Humidity39%

Visibility6.2 mi

Dew point44°

Thu, 2275° / 51°

75 °

Gretna, Thursday, 22 October

Clear. High 75°, low 51°.

Pressure30.27 inHg

Wind3.2 mph SE

Humidity42%

Visibility6.2 mi

Dew point47°

Fri, 2373° / 51°

73 °

Gretna, Friday, 23 October

Clear. High 73°, low 51°.

Pressure30.21 inHg

Wind7 mph SE

Humidity46%

Visibility—

Dew point47°

Sat, 2475° / 51°

75 °

Gretna, Saturday, 24 October

Overcast. High 75°, low 51°.

Pressure30.27 inHg

Wind7.4 mph SE

Humidity41%

Visibility—

Dew point45°

Sun, 2580° / 57°

80 °

Gretna, Sunday, 25 October

Overcast. High 80°, low 57°.

Pressure30.30 inHg

Wind5.3 mph SW

Humidity25%

Visibility—

Dew point37°

Mon, 2678° / 59°

78 °

Gretna, Monday, 26 October

Overcast. High 78°, low 59°.

Pressure30.18 inHg

Wind5.9 mph SW

Humidity30%

Visibility—

Dew point42°

Tue, 2771° / 58°

0.12

71 °

Gretna, Tuesday, 27 October

Rain. High 71°, low 58°.

Pressure30.09 inHg

Wind3 mph S

Humidity49%

Visibility—

Dew point50°

Wed, 2851° / 42°

0.36

51 °

Gretna, Wednesday, 28 October

Rain. High 51°, low 42°.

Pressure30.36 inHg

Wind10.1 mph N

Humidity76%

Visibility—

Dew point36°

Thu, 2955° / 32°

55 °

Gretna, Thursday, 29 October

Mostly clear. High 55°, low 32°.

Pressure30.30 inHg

Wind6.1 mph NE

Humidity28%

Visibility—

Dew point18°

Fri, 3057° / 32°

57 °

Gretna, Friday, 30 October

Clear. High 57°, low 32°.

Pressure30.39 inHg

Wind5.7 mph E

Humidity27%

Visibility—

Dew point18°

Sat, 3165° / 35°

65 °

Gretna, Saturday, 31 October

Overcast. High 65°, low 35°.

Pressure30.36 inHg

Wind8.6 mph SE

Humidity26%

Visibility—

Dew point21°

Sun, 0171° / 43°

71 °

Gretna, Sunday, 1 November

Clear. High 71°, low 43°.

Pressure30.30 inHg

Wind8.5 mph S

Humidity32%

Visibility—

Dew point35°

Mon, 0273° / 45°

73 °

Gretna, Monday, 2 November

Mostly clear. High 73°, low 45°.

Pressure30.18 inHg

Wind9.9 mph S

Humidity26%

Visibility—

Dew point32°

Tue, 0368° / 58°

0.4

68 °

Gretna, Tuesday, 3 November

Rain. High 68°, low 58°.

Pressure30.21 inHg

Wind7.2 mph N

Humidity84%

Visibility—

Dew point59°

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.