Weather in Riverstream, IL
Riverstream, Wednesday, 7 October, 03:25
Clear. Feels like 59°. High 77°, low 57°.
Monthly outlook for Riverstream, IL: average high 61.3°, average low 46.1°. That is 0.7° above the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 10 October (78°), the coolest 18 October (29.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 7 October – 16 October | 66.2° | 61.3° | +2.7° |
| 17 October – 26 October | 53.1° | 57.1° | -2.2° |
| 27 October – 5 November | at normal | 53.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (9 mi).
0
Riverstream, Thursday, 8 October
Partly cloudy. High 69°, low 50°.
0.55
Riverstream, Friday, 9 October
Heavy rain. High 65°, low 47°.
0
Riverstream, Saturday, 10 October
Clear. High 78°, low 60°.
0.1Riverstream, Sunday, 11 October
Light rain. High 64°, low 56°.
0Riverstream, Monday, 12 October
Light rain. High 74°, low 54°.
0.2Riverstream, Tuesday, 13 October
Light rain. High 54°, low 46°.
0
Riverstream, Wednesday, 14 October
Overcast. High 56°, low 43°.
1.37Riverstream, Thursday, 15 October
Heavy rain. High 73°, low 51°.
0Riverstream, Friday, 16 October
Clear. High 51°, low 41°.
0Riverstream, Saturday, 17 October
Overcast. High 44°, low 37°.
0
Riverstream, Sunday, 18 October
Mostly clear. High 49°, low 30°.
0Riverstream, Monday, 19 October
Overcast. High 57°, low 37°.
0Riverstream, Tuesday, 20 October
Mostly clear. High 57°, low 43°.
0.02Riverstream, Wednesday, 21 October
Light rain. High 57°, low 42°.
0Riverstream, Thursday, 22 October
Partly cloudy. High 55°, low 44°.
0.13
Riverstream, Friday, 23 October
Climate normal for this date — 60-year average.
0.1Riverstream, Saturday, 24 October
Climate normal for this date — 60-year average.
0.1Riverstream, Sunday, 25 October
Climate normal for this date — 60-year average.
0.13Riverstream, Monday, 26 October
Climate normal for this date — 60-year average.
0.08Riverstream, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Riverstream, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Riverstream, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Riverstream, Friday, 30 October
Climate normal for this date — 60-year average.
0.12Riverstream, Saturday, 31 October
Climate normal for this date — 60-year average.
0.16Riverstream, Sunday, 1 November
Climate normal for this date — 60-year average.
0.14Riverstream, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Riverstream, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Riverstream, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Riverstream, Thursday, 5 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 Riverstream, 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 Riverstream, 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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