As of 09:10 CDT

Weather in Gretna, MO

72°

Gretna, Thursday, 15 October, 09:10

Overcast. Feels like 74°. High 81°, low 64°.

Pressure30.03 inHg

Wind5.7 mph SW

Humidity99%

Visibility2.3 mi

Dew point71°

See detailed hourly forecast

Fri, 1662° / 49°

62 °

Gretna, Friday, 16 October

Light rain. High 62°, low 49°.

Pressure30.39 inHg

Wind17.9 mph N

Humidity47%

Visibility6.2 mi

Dew point36°

Sat, 1760° / 42°

60 °

Gretna, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.59 inHg

Wind3.1 mph E

Humidity51%

Visibility6.2 mi

Dew point38°

Sun, 1864° / 43°

64 °

Gretna, Sunday, 18 October

Mostly clear. High 64°, low 43°.

Pressure30.45 inHg

Wind5.9 mph SE

Humidity48%

Visibility6.2 mi

Dew point40°

Mon, 1969° / 46°

69 °

Gretna, Monday, 19 October

Clear. High 69°, low 46°.

Pressure30.30 inHg

Wind7.2 mph SE

Humidity42%

Visibility—

Dew point41°

Tue, 2072° / 48°

72 °

Gretna, Tuesday, 20 October

Overcast. High 72°, low 48°.

Pressure30.27 inHg

Wind5.7 mph SE

Humidity52%

Visibility—

Dew point49°

Wed, 2179° / 54°

79 °

Gretna, Wednesday, 21 October

Clear. High 79°, low 54°.

Pressure30.24 inHg

Wind4.9 mph SE

Humidity40%

Visibility—

Dew point48°

Thu, 2281° / 59°

81 °

Gretna, Thursday, 22 October

Partly cloudy. High 81°, low 59°.

Pressure30.15 inHg

Wind6.9 mph SE

Humidity34%

Visibility—

Dew point46°

Fri, 2380° / 57°

80 °

Gretna, Friday, 23 October

Overcast. High 80°, low 57°.

Pressure30.09 inHg

Wind11.4 mph SE

Humidity32%

Visibility—

Dew point44°

Sat, 2478° / 56°

0.11

78 °

Gretna, Saturday, 24 October

Light rain. High 78°, low 56°.

Pressure30.15 inHg

Wind10.6 mph W

Humidity50%

Visibility—

Dew point55°

Sun, 2575° / 50°

75 °

Gretna, Sunday, 25 October

Clear. High 75°, low 50°.

Pressure30.42 inHg

Wind5.8 mph E

Humidity43%

Visibility—

Dew point46°

Mon, 2677° / 54°

77 °

Gretna, Monday, 26 October

Overcast. High 77°, low 54°.

Pressure30.33 inHg

Wind6.9 mph S

Humidity39%

Visibility—

Dew point48°

Tue, 2778° / 56°

78 °

Gretna, Tuesday, 27 October

Overcast. High 78°, low 56°.

Pressure30.18 inHg

Wind9.7 mph SW

Humidity40%

Visibility—

Dew point48°

Wed, 2876° / 59°

0.03

76 °

Gretna, Wednesday, 28 October

Light rain. High 76°, low 59°.

Pressure30.03 inHg

Wind11.1 mph SW

Humidity49%

Visibility—

Dew point53°

Thu, 2982° / 65°

0.02

82 °

Gretna, Thursday, 29 October

Light rain. High 82°, low 65°.

Pressure29.94 inHg

Wind11.4 mph SW

Humidity53%

Visibility—

Dew point60°

Fri, 3077° / 57°

0.33

77 °

Gretna, Friday, 30 October

Rain. High 77°, low 57°.

Pressure29.88 inHg

Wind13.5 mph SW

Humidity76%

Visibility—

Dew point66°

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.