Weather in Grafton, IL
Grafton, Tuesday, 3 November, 00:56
Overcast. Feels like 67°. High 71°, low 61°.
Monthly outlook for Grafton, IL: average high 65.8°, average low 50.6°. That is 6.4° above the climate normal for November. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 16 November (72.3°), the coolest 12 November (41.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 3 November – 12 November | 63.1° | 55.5° | +4.2° |
| 13 November – 22 November | 70.4° | 52° | +10.2° |
| 23 November – 2 December | at normal | 47.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (11 mi).
0Grafton, Wednesday, 4 November
Overcast. High 60°, low 55°.
0
Grafton, Thursday, 5 November
Clear. High 62°, low 49°.
0Grafton, Friday, 6 November
Overcast. High 57°, low 51°.
0Grafton, Saturday, 7 November
Overcast. High 57°, low 49°.
0Grafton, Sunday, 8 November
Clear. High 62°, low 46°.
0Grafton, Monday, 9 November
Clear. High 68°, low 45°.
0Grafton, Tuesday, 10 November
Clear. High 72°, low 49°.
0Grafton, Wednesday, 11 November
Overcast. High 62°, low 48°.
0Grafton, Thursday, 12 November
Overcast. High 59°, low 41°.
0Grafton, Friday, 13 November
Overcast. High 70°, low 49°.
0Grafton, Saturday, 14 November
Overcast. High 69°, low 55°.
0Grafton, Sunday, 15 November
Clear. High 70°, low 52°.
0Grafton, Monday, 16 November
Clear. High 72°, low 51°.
0Grafton, Tuesday, 17 November
Overcast. High 72°, low 53°.
0
Grafton, Wednesday, 18 November
Partly cloudy. High 70°, low 54°.
0.09Grafton, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Grafton, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Grafton, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Grafton, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Grafton, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Grafton, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13
Grafton, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Grafton, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Grafton, Friday, 27 November
Climate normal for this date — 60-year average.
0.09Grafton, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Grafton, Sunday, 29 November
Climate normal for this date — 60-year average.
0.17Grafton, Monday, 30 November
Climate normal for this date — 60-year average.
0.11Grafton, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.08Grafton, Wednesday, 2 December
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 Grafton, 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 Grafton, 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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