Weather in Richardson, IL
Richardson, Sunday, 25 October, 14:03
Overcast. Feels like 72°. High 73°, low 51°.
Monthly outlook for Richardson, IL: average high 61.4°, average low 49.1°. That is 4.3° above the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 25 October (73.2°), the coolest 9 November (39°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 66.3° | 55° | +6.3° |
| 4 November – 13 November | 53.2° | 49.5° | +2° |
| 14 November – 23 November | at normal | 45.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Sycamore (5 mi).
0Richardson, Monday, 26 October
Overcast. High 67°, low 49°.
0.01
Richardson, Tuesday, 27 October
Light rain. High 66°, low 48°.
0Richardson, Wednesday, 28 October
Light rain. High 69°, low 52°.
0.12Richardson, Thursday, 29 October
Light rain. High 68°, low 56°.
0Richardson, Friday, 30 October
Light rain. High 65°, low 46°.
0.2Richardson, Saturday, 31 October
Light rain. High 66°, low 53°.
0.34Richardson, Sunday, 1 November
Rain. High 58°, low 57°.
0.01Richardson, Monday, 2 November
Light rain. High 65°, low 54°.
0.06Richardson, Tuesday, 3 November
Light rain. High 65°, low 54°.
0
Richardson, Wednesday, 4 November
Partly cloudy. High 55°, low 47°.
0Richardson, Thursday, 5 November
Overcast. High 52°, low 45°.
0
Richardson, Friday, 6 November
Mostly clear. High 53°, low 43°.
0.01Richardson, Saturday, 7 November
Light rain. High 56°, low 41°.
0.1Richardson, Sunday, 8 November
Light rain. High 55°, low 50°.
0.11Richardson, Monday, 9 November
Light rain. High 48°, low 39°.
0.1
Richardson, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Richardson, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Richardson, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Richardson, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Richardson, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Richardson, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Richardson, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Richardson, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Richardson, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Richardson, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Richardson, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Richardson, Saturday, 21 November
Climate normal for this date — 60-year average.
0.03Richardson, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Richardson, Monday, 23 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 Richardson, 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 Richardson, 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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