Weather in Gretna, IL
Gretna, Sunday, 1 November, 07:42
Overcast. Feels like 53°. High 66°, low 52°.
Monthly outlook for Gretna, IL: average high 60.3°, average low 49°. That is 5.7° above the climate normal for November. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 16 November (72.6°), the coolest 9 November (38.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 59.4° | 51.9° | +4.1° |
| 11 November – 20 November | 61.8° | 46.6° | +8.4° |
| 21 November – 30 November | at normal | 42.3° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Glendale Heights (2 mi).
0.09
Gretna, Monday, 2 November
Rain. High 66°, low 56°.
0.48Gretna, Tuesday, 3 November
Rain. High 71°, low 62°.
0.34Gretna, Wednesday, 4 November
Rain. High 64°, low 54°.
0.04Gretna, Thursday, 5 November
Light rain. High 53°, low 51°.
0.07Gretna, Friday, 6 November
Light rain. High 51°, low 49°.
0Gretna, Saturday, 7 November
Overcast. High 58°, low 47°.
0
Gretna, Sunday, 8 November
Clear. High 55°, low 42°.
0
Gretna, Monday, 9 November
Partly cloudy. High 54°, low 39°.
0Gretna, Tuesday, 10 November
Overcast. High 56°, low 42°.
0Gretna, Wednesday, 11 November
Overcast. High 61°, low 48°.
0Gretna, Thursday, 12 November
Overcast. High 50°, low 42°.
0Gretna, Friday, 13 November
Partly cloudy. High 58°, low 40°.
0.04Gretna, Saturday, 14 November
Light rain. High 65°, low 49°.
0Gretna, Sunday, 15 November
Overcast. High 65°, low 54°.
0Gretna, Monday, 16 November
Light rain. High 73°, low 57°.
0.08Gretna, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Gretna, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Gretna, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Gretna, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Gretna, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Gretna, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Gretna, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Gretna, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.08
Gretna, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.11Gretna, Thursday, 26 November
Climate normal for this date — 60-year average.
0.2Gretna, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Gretna, Saturday, 28 November
Climate normal for this date — 60-year average.
0.06Gretna, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07Gretna, Monday, 30 November
Climate normal for this date — 60-year average.
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, IL 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, IL 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.
Sun and moon today
Weather history
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