Monthly outlook for River Grove, IL: average high 64.2°, average low 51.1°. That is 5.1° above the climate normal for October. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (71.2°), the coolest 4 November (42.5°).
64.2°/51.1°
Average high / low
+5.1°
Above normal
6 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
65.7°
56.4°
+5.2°
2 November – 11 November
61.6°
51.7°
+5.5°
12 November – 21 November
at normal
46.8°
—
October records over 66 years
89.2°3 October 2025All-time high
26.2°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Elmwood Park (1 mi).
Sat, 2468° / 48°0
68 °
River Grove, Saturday, 24 October
Overcast. High 68°, low 48°.
Pressure30.39 inHg
Wind4.9 mph S
Humidity66%
Visibility6.2 mi
Dew point51°
Sun, 2569° / 49°0
69 °
River Grove, Sunday, 25 October
Partly cloudy. High 69°, low 49°.
Pressure30.39 inHg
Wind4.7 mph SW
Humidity62%
Visibility6.2 mi
Dew point52°
Mon, 2663° / 51°0
63 °
River Grove, Monday, 26 October
Overcast. High 63°, low 51°.
Pressure30.36 inHg
Wind6.5 mph NE
Humidity72%
Visibility6.2 mi
Dew point53°
Tue, 2762° / 52°0
62 °
River Grove, Tuesday, 27 October
Overcast. High 62°, low 52°.
Pressure30.30 inHg
Wind4.7 mph E
Humidity74%
Visibility6.2 mi
Dew point52°
Wed, 2868° / 55°0.08
68 °
River Grove, Wednesday, 28 October
Light rain. High 68°, low 55°.
Pressure30.09 inHg
Wind10 mph SW
Humidity64%
Visibility—
Dew point52°
Thu, 2970° / 51°0.06
70 °
River Grove, Thursday, 29 October
Light rain. High 70°, low 51°.
Pressure30.15 inHg
Wind10.3 mph W
Humidity54%
Visibility—
Dew point48°
Fri, 3062° / 55°0
62 °
River Grove, Friday, 30 October
Light rain. High 62°, low 55°.
Pressure30.21 inHg
Wind7.4 mph NE
Humidity47%
Visibility—
Dew point40°
Sat, 3160° / 55°0.19
60 °
River Grove, Saturday, 31 October
Light rain. High 60°, low 55°.
Pressure30.09 inHg
Wind9.8 mph S
Humidity78%
Visibility—
Dew point52°
Sun, 0163° / 58°0.07
63 °
River Grove, Sunday, 1 November
Light rain. High 63°, low 58°.
Pressure30.15 inHg
Wind8.1 mph S
Humidity70%
Visibility—
Dew point51°
Mon, 0260° / 57°1.29
60 °
River Grove, Monday, 2 November
Rain. High 60°, low 57°.
Pressure30.06 inHg
Wind10.2 mph E
Humidity94%
Visibility—
Dew point56°
Tue, 0364° / 48°0.6
64 °
River Grove, Tuesday, 3 November
Rain. High 64°, low 48°.
Pressure29.74 inHg
Wind14.2 mph SW
Humidity91%
Visibility—
Dew point61°
Wed, 0455° / 42°0
55 °
River Grove, Wednesday, 4 November
Light rain. High 55°, low 42°.
Pressure30.33 inHg
Wind10.2 mph NW
Humidity28%
Visibility—
Dew point20°
Thu, 0561° / 47°0
61 °
River Grove, Thursday, 5 November
Clear. High 61°, low 47°.
Pressure30.00 inHg
Wind13.9 mph SW
Humidity36%
Visibility—
Dew point30°
Fri, 0664° / 49°0
64 °
River Grove, Friday, 6 November
Mostly clear. High 64°, low 49°.
Pressure29.91 inHg
Wind7.3 mph SW
Humidity44%
Visibility—
Dew point39°
Sat, 0766° / 54°0
66 °
River Grove, Saturday, 7 November
Overcast. High 66°, low 54°.
Pressure30.00 inHg
Wind6.9 mph S
Humidity55%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0851° / 39°0.06
51 °
River Grove, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.06 in
Chance of precipitation18%
Record high75° (2020)
Record low17° (1991)
Mon, 0952° / 39°0.12
52 °
River Grove, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.12 in
Chance of precipitation37%
Record high73° (2020)
Record low20° (1991)
Tue, 1050° / 38°0.11
50 °
River Grove, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high74° (2020)
Record low19° (2018)
Wed, 1148° / 36°0.08
48 °
River Grove, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.08 in
Chance of precipitation32%
Record high70° (1964)
Record low17° (2019)
Thu, 1246° / 35°0.06
46 °
River Grove, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high67° (1964)
Record low3° (2019)
Fri, 1347° / 35°0.05
47 °
River Grove, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (1999)
Record low2° (2019)
Sat, 1448° / 35°0.07
48 °
River Grove, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high68° (1971)
Record low15° (1986)
Sun, 1547° / 36°0.1
47 °
River Grove, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.1 in
Chance of precipitation28%
Record high69° (2025)
Record low20° (1982)
Mon, 1647° / 35°0.05
47 °
River Grove, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation23%
Record high63° (2023)
Record low22° (1997)
Tue, 1747° / 36°0.09
47 °
River Grove, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high69° (2016)
Record low16° (2014)
Wed, 1848° / 36°0.13
48 °
River Grove, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.13 in
Chance of precipitation27%
Record high66° (2016)
Record low12° (2014)
Thu, 1947° / 36°0.07
47 °
River Grove, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.07 in
Chance of precipitation30%
Record high64° (1983)
Record low19° (2014)
Fri, 2046° / 35°0.09
46 °
River Grove, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high62° (2003)
Record low14° (2022)
Sat, 2144° / 33°0.1
44 °
River Grove, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.1 in
Chance of precipitation27%
Record high66° (1990)
Record low11° (1964)
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 River Grove, 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 River Grove, 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.