Weather in Savanna, IL
Savanna, Friday, 16 October, 01:57
Overcast. Feels like 50°. High 54°, low 44°.
Monthly outlook for Savanna, IL: average high 62.6°, average low 47.5°. That is 2.7° above the climate normal for October. Precipitation is expected on 1 day (about 1.0 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 24 October (72.9°), the coolest 17 October (37.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 65.4° | 59° | +3.6° |
| 26 October – 4 November | 58° | 54.7° | +1.8° |
| 5 November – 14 November | at normal | 49° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Goose Lake (15 mi).
0
Savanna, Saturday, 17 October
Clear. High 56°, low 38°.
0Savanna, Sunday, 18 October
Clear. High 62°, low 43°.
0Savanna, Monday, 19 October
Overcast. High 63°, low 42°.
0
Savanna, Tuesday, 20 October
Mostly clear. High 67°, low 46°.
0Savanna, Wednesday, 21 October
Mostly clear. High 69°, low 46°.
0Savanna, Thursday, 22 October
Overcast. High 70°, low 53°.
0
Savanna, Friday, 23 October
Partly cloudy. High 71°, low 55°.
0Savanna, Saturday, 24 October
Partly cloudy. High 73°, low 57°.
0Savanna, Sunday, 25 October
Partly cloudy. High 70°, low 55°.
0.04
Savanna, Monday, 26 October
Light rain. High 65°, low 51°.
0.01Savanna, Tuesday, 27 October
Light rain. High 57°, low 48°.
0.94Savanna, Wednesday, 28 October
Rain. High 51°, low 47°.
0.04Savanna, Thursday, 29 October
Light rain. High 58°, low 48°.
0Savanna, Friday, 30 October
Clear. High 58°, low 44°.
0Savanna, Saturday, 31 October
Overcast. High 59°, low 43°.
0.19
Savanna, Sunday, 1 November
Climate normal for this date — 60-year average.
0.11Savanna, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Savanna, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Savanna, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1Savanna, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Savanna, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Savanna, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Savanna, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Savanna, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Savanna, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Savanna, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Savanna, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Savanna, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Savanna, Saturday, 14 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 Savanna, 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 Savanna, 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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