Weather in Grigg, IL
Grigg, Thursday, 8 October, 01:35
Clear. Feels like 65°. High 85°, low 53°.
Monthly outlook for Grigg, IL: average high 74.7°, average low 54.4°. That is 3.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 15 October (93.8°), the coolest 18 October (42.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 81° | 69.7° | +6.3° |
| 18 October – 27 October | 64.2° | 65.2° | -0.5° |
| 28 October – 6 November | at normal | 61.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Red Bud (5 mi).
0
Grigg, Friday, 9 October
Clear. High 87°, low 54°.
0.06
Grigg, Saturday, 10 October
Light rain. High 84°, low 62°.
0.22Grigg, Sunday, 11 October
Rain. High 73°, low 60°.
0Grigg, Monday, 12 October
Clear. High 90°, low 58°.
0.03Grigg, Tuesday, 13 October
Light rain. High 76°, low 61°.
0
Grigg, Wednesday, 14 October
Overcast. High 76°, low 54°.
0Grigg, Thursday, 15 October
Clear. High 94°, low 69°.
0.5Grigg, Friday, 16 October
Rain. High 89°, low 63°.
0.5Grigg, Saturday, 17 October
Rain. High 57°, low 51°.
0Grigg, Sunday, 18 October
Clear. High 62°, low 42°.
0Grigg, Monday, 19 October
Clear. High 66°, low 43°.
0
Grigg, Tuesday, 20 October
Partly cloudy. High 74°, low 49°.
0Grigg, Wednesday, 21 October
Overcast. High 65°, low 48°.
0Grigg, Thursday, 22 October
Overcast. High 61°, low 53°.
0.26Grigg, Friday, 23 October
Rain. High 57°, low 53°.
0.1Grigg, Saturday, 24 October
Climate normal for this date — 60-year average.
0.13Grigg, Sunday, 25 October
Climate normal for this date — 60-year average.
0.17
Grigg, Monday, 26 October
Climate normal for this date — 60-year average.
0.11Grigg, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Grigg, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.12Grigg, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Grigg, Friday, 30 October
Climate normal for this date — 60-year average.
0.17Grigg, Saturday, 31 October
Climate normal for this date — 60-year average.
0.15Grigg, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Grigg, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Grigg, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13Grigg, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15Grigg, Thursday, 5 November
Climate normal for this date — 60-year average.
0.1Grigg, Friday, 6 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 Grigg, 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 Grigg, 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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