Weather in Diamond, IL
Diamond, Friday, 9 October, 09:56
Light rain. Feels like 56°. High 78°, low 53°.
Monthly outlook for Diamond, IL: average high 66.1°, average low 49.6°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (83°), the coolest 18 October (34.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 69.3° | 64.1° | +2.9° |
| 19 October – 28 October | 60.7° | 59.6° | +0.6° |
| 29 October – 7 November | at normal | 55.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lorenzo (4 mi).
0
Diamond, Saturday, 10 October
Overcast. High 79°, low 59°.
0.03Diamond, Sunday, 11 October
Light rain. High 74°, low 58°.
0
Diamond, Monday, 12 October
Clear. High 83°, low 61°.
0Diamond, Tuesday, 13 October
Overcast. High 79°, low 63°.
0Diamond, Wednesday, 14 October
Overcast. High 68°, low 60°.
0.35Diamond, Thursday, 15 October
Rain. High 60°, low 54°.
0.56Diamond, Friday, 16 October
Rain. High 71°, low 44°.
0
Diamond, Saturday, 17 October
Partly cloudy. High 47°, low 37°.
0Diamond, Sunday, 18 October
Partly cloudy. High 53°, low 34°.
0Diamond, Monday, 19 October
Overcast. High 63°, low 40°.
0Diamond, Tuesday, 20 October
Clear. High 67°, low 46°.
0Diamond, Wednesday, 21 October
Overcast. High 69°, low 52°.
0.49Diamond, Thursday, 22 October
Rain. High 61°, low 55°.
0Diamond, Friday, 23 October
Overcast. High 57°, low 43°.
0
Diamond, Saturday, 24 October
Mostly clear. High 47°, low 36°.
0.12Diamond, Sunday, 25 October
Climate normal for this date — 60-year average.
0.11Diamond, Monday, 26 October
Climate normal for this date — 60-year average.
0.1
Diamond, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Diamond, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Diamond, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Diamond, Friday, 30 October
Climate normal for this date — 60-year average.
0.15Diamond, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Diamond, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Diamond, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Diamond, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Diamond, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Diamond, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Diamond, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Diamond, Saturday, 7 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 Diamond, 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 Diamond, 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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