Weather in Boulder Hill, IL
Boulder Hill, Saturday, 17 October, 00:38
Clear. Feels like 37°. High 55°, low 37°.
Monthly outlook for Boulder Hill, IL: average high 61.3°, average low 46°. That is 1.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (71.3°), the coolest 17 October (36.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 63.4° | 58.9° | +2.5° |
| 27 October – 5 November | 57.9° | 55° | +1.6° |
| 6 November – 15 November | at normal | 49.5° | — |
October records over 66 years
0
Boulder Hill, Sunday, 18 October
Clear. High 62°, low 42°.
0Boulder Hill, Monday, 19 October
Clear. High 64°, low 41°.
0Boulder Hill, Tuesday, 20 October
Clear. High 66°, low 44°.
0Boulder Hill, Wednesday, 21 October
Clear. High 68°, low 46°.
0.02
Boulder Hill, Thursday, 22 October
Light rain. High 69°, low 49°.
0
Boulder Hill, Friday, 23 October
Partly cloudy. High 71°, low 58°.
0
Boulder Hill, Saturday, 24 October
Overcast. High 71°, low 54°.
0Boulder Hill, Sunday, 25 October
Overcast. High 57°, low 46°.
0.03Boulder Hill, Monday, 26 October
Light rain. High 51°, low 47°.
0Boulder Hill, Tuesday, 27 October
Overcast. High 66°, low 52°.
0Boulder Hill, Wednesday, 28 October
Clear. High 54°, low 42°.
0.19Boulder Hill, Thursday, 29 October
Rain. High 54°, low 44°.
0.3Boulder Hill, Friday, 30 October
Rain. High 62°, low 50°.
0
Boulder Hill, Saturday, 31 October
Mostly clear. High 54°, low 44°.
0Boulder Hill, Sunday, 1 November
Clear. High 58°, low 41°.
0.11
Boulder Hill, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Boulder Hill, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Boulder Hill, Wednesday, 4 November
Climate normal for this date — 60-year average.
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.
0.11Boulder 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.
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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