As of 02:18 CDT

Weather in Gretna, MO

70°

Gretna, Thursday, 15 October, 02:18

Overcast. Feels like 71°. High 81°, low 61°.

Pressure30.00 inHg

Wind8.1 mph E

Humidity98%

Visibility2.3 mi

Dew point70°

See detailed hourly forecast

Fri, 1661° / 48°

61 °

Gretna, Friday, 16 October

Overcast. High 61°, low 48°.

Pressure30.36 inHg

Wind18.3 mph NW

Humidity46%

Visibility6.2 mi

Dew point35°

Sat, 1759° / 42°

59 °

Gretna, Saturday, 17 October

Clear. High 59°, low 42°.

Pressure30.56 inHg

Wind4.8 mph NE

Humidity51%

Visibility6.2 mi

Dew point37°

Sun, 1863° / 43°

63 °

Gretna, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.45 inHg

Wind5.2 mph SE

Humidity53%

Visibility6.2 mi

Dew point40°

Mon, 1968° / 45°

68 °

Gretna, Monday, 19 October

Overcast. High 68°, low 45°.

Pressure30.33 inHg

Wind6.3 mph SE

Humidity41%

Visibility—

Dew point39°

Tue, 2073° / 46°

73 °

Gretna, Tuesday, 20 October

Clear. High 73°, low 46°.

Pressure30.27 inHg

Wind4.9 mph SE

Humidity41%

Visibility—

Dew point42°

Wed, 2178° / 54°

78 °

Gretna, Wednesday, 21 October

Clear. High 78°, low 54°.

Pressure30.21 inHg

Wind8.5 mph SE

Humidity49%

Visibility—

Dew point52°

Thu, 2281° / 58°

81 °

Gretna, Thursday, 22 October

Mostly clear. High 81°, low 58°.

Pressure30.12 inHg

Wind10.8 mph S

Humidity45%

Visibility—

Dew point54°

Fri, 2379° / 65°

0.09

79 °

Gretna, Friday, 23 October

Light rain. High 79°, low 65°.

Pressure30.03 inHg

Wind10.9 mph S

Humidity59%

Visibility—

Dew point61°

Sat, 2474° / 64°

0.42

74 °

Gretna, Saturday, 24 October

Rain. High 74°, low 64°.

Pressure30.18 inHg

Wind3.8 mph SW

Humidity80%

Visibility—

Dew point65°

Sun, 2565° / 48°

1.32

65 °

Gretna, Sunday, 25 October

Rain. High 65°, low 48°.

Pressure30.15 inHg

Wind9.2 mph N

Humidity94%

Visibility—

Dew point56°

Mon, 2662° / 45°

0.06

62 °

Gretna, Monday, 26 October

Light rain. High 62°, low 45°.

Pressure30.18 inHg

Wind8.5 mph NW

Humidity31%

Visibility—

Dew point28°

Tue, 2764° / 42°

64 °

Gretna, Tuesday, 27 October

Overcast. High 64°, low 42°.

Pressure30.12 inHg

Wind5.2 mph NE

Humidity36%

Visibility—

Dew point33°

Wed, 2866° / 43°

66 °

Gretna, Wednesday, 28 October

Clear. High 66°, low 43°.

Pressure29.94 inHg

Wind5.1 mph NW

Humidity37%

Visibility—

Dew point36°

Thu, 2971° / 46°

71 °

Gretna, Thursday, 29 October

Clear. High 71°, low 46°.

Pressure30.09 inHg

Wind6.2 mph NW

Humidity37%

Visibility—

Dew point39°

Fri, 3072° / 48°

72 °

Gretna, Friday, 30 October

Mostly clear. High 72°, low 48°.

Pressure30.03 inHg

Wind8.7 mph S

Humidity38%

Visibility—

Dew point42°

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.