Weather in Boulder Hill, IL
Boulder Hill, Tuesday, 20 October, 11:20
Clear. Feels like 63°. High 67°, low 42°.
Monthly outlook for Boulder Hill, IL: average high 58.3°, average low 41°. That is 0.9° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 October (71.5°), the coolest 28 October (29°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 61.8° | 57.9° | +2.2° |
| 30 October – 8 November | 52.5° | 53.8° | -0.7° |
| 9 November – 18 November | at normal | 48.2° | — |
October records over 66 years
0Boulder Hill, Wednesday, 21 October
Clear. High 72°, low 42°.
0Boulder Hill, Thursday, 22 October
Clear. High 69°, low 47°.
0
Boulder Hill, Friday, 23 October
Mostly clear. High 65°, low 49°.
0
Boulder Hill, Saturday, 24 October
Overcast. High 67°, low 47°.
0Boulder Hill, Sunday, 25 October
Overcast. High 70°, low 53°.
0.12
Boulder Hill, Monday, 26 October
Light rain. High 67°, low 41°.
0.06Boulder Hill, Tuesday, 27 October
Light rain. High 46°, low 35°.
0Boulder Hill, Wednesday, 28 October
Clear. High 46°, low 29°.
0Boulder Hill, Thursday, 29 October
Clear. High 49°, low 36°.
0Boulder Hill, Friday, 30 October
Clear. High 43°, low 32°.
0
Boulder Hill, Saturday, 31 October
Partly cloudy. High 48°, low 29°.
0Boulder Hill, Sunday, 1 November
Light rain. High 50°, low 40°.
0Boulder Hill, Monday, 2 November
Clear. High 59°, low 40°.
0Boulder Hill, Tuesday, 3 November
Overcast. High 59°, low 44°.
0.54Boulder Hill, Wednesday, 4 November
Rain. High 55°, low 50°.
0.11Boulder Hill, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Boulder Hill, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Boulder Hill, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Boulder Hill, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Boulder Hill, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Boulder Hill, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Boulder Hill, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Boulder Hill, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Boulder Hill, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Boulder Hill, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Boulder Hill, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Boulder Hill, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Boulder Hill, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.13Boulder Hill, Wednesday, 18 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 Boulder Hill, 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 Boulder Hill, 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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