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As of 06:00 CDT

Weather in Gretna, MO

56°Current weather

Gretna, Wednesday, 28 October, 06:00

Clear. Feels like 55°. High 79°, low 55°.

Pressure30.18 inHg
Wind4.6 mph E
Humidity81%
Visibility6.2 mi
Dew point50°
Thu, 2981° / 58°0.01Light rain
81 °Light rain

Gretna, Thursday, 29 October

Light rain. High 81°, low 58°.

Pressure30.15 inHg
Wind5.1 mph SW
Humidity58%
Visibility6.2 mi
Dew point61°
Fri, 3077° / 57°0.04Light rain
77 °Light rain

Gretna, Friday, 30 October

Light rain. High 77°, low 57°.

Pressure30.18 inHg
Wind6 mph SE
Humidity50%
Visibility6.2 mi
Dew point55°
Sat, 3170° / 57°0Overcast
70 °Overcast

Gretna, Saturday, 31 October

Overcast. High 70°, low 57°.

Pressure30.21 inHg
Wind4.9 mph SE
Humidity57%
Visibility6.2 mi
Dew point54°
Sun, 0175° / 59°0.06Light rain
75 °Light rain

Gretna, Sunday, 1 November

Light rain. High 75°, low 59°.

Pressure30.18 inHg
Wind7.7 mph SE
Humidity53%
Visibility—
Dew point54°
Mon, 0268° / 60°0.49Rain
68 °Rain

Gretna, Monday, 2 November

Rain. High 68°, low 60°.

Pressure30.00 inHg
Wind11 mph SE
Humidity82%
Visibility—
Dew point61°
Tue, 0365° / 45°0Clear
65 °Clear

Gretna, Tuesday, 3 November

Clear. High 65°, low 45°.

Pressure29.68 inHg
Wind11.2 mph SW
Humidity24%
Visibility—
Dew point24°
Wed, 0463° / 49°0.04Light rain
63 °Light rain

Gretna, Wednesday, 4 November

Light rain. High 63°, low 49°.

Pressure29.71 inHg
Wind10.7 mph N
Humidity59%
Visibility—
Dew point45°
Thu, 0565° / 46°0Mostly clear
65 °Mostly clear

Gretna, Thursday, 5 November

Mostly clear. High 65°, low 46°.

Pressure29.85 inHg
Wind11.7 mph NW
Humidity48%
Visibility—
Dew point39°
Fri, 0660° / 45°0Mostly clear
60 °Mostly clear

Gretna, Friday, 6 November

Mostly clear. High 60°, low 45°.

Pressure30.12 inHg
Wind8.8 mph NW
Humidity43%
Visibility—
Dew point36°
Sat, 0760° / 37°0Mostly clear
60 °Mostly clear

Gretna, Saturday, 7 November

Mostly clear. High 60°, low 37°.

Pressure30.21 inHg
Wind4.5 mph E
Humidity37%
Visibility—
Dew point29°
Sun, 0863° / 39°0Clear
63 °Clear

Gretna, Sunday, 8 November

Clear. High 63°, low 39°.

Pressure30.21 inHg
Wind5.3 mph SE
Humidity37%
Visibility—
Dew point31°
Mon, 0956° / 42°0Overcast
56 °Overcast

Gretna, Monday, 9 November

Overcast. High 56°, low 42°.

Pressure30.21 inHg
Wind3.8 mph E
Humidity42%
Visibility—
Dew point31°
Tue, 1065° / 44°0.05Light rain
65 °Light rain

Gretna, Tuesday, 10 November

Light rain. High 65°, low 44°.

Pressure30.03 inHg
Wind7.7 mph SW
Humidity50%
Visibility—
Dew point43°
Wed, 1163° / 49°0.1Light rain
63 °Light rain

Gretna, Wednesday, 11 November

Light rain. High 63°, low 49°.

Pressure29.91 inHg
Wind8.4 mph W
Humidity39%
Visibility—
Dew point36°
Thu, 1269° / 48°0.1Light rain
69 °Light rain

Gretna, Thursday, 12 November

Light rain. High 69°, low 48°.

Pressure29.56 inHg
Wind9.3 mph W
Humidity73%
Visibility—
Dew point55°

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.