Monthly outlook for River Grove, IL: average high 59.5°, average low 49.2°. That is 2.8° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (72°), the coolest 6 November (31.1°).
59.5°/49.2°
Average high / low
+2.8°
Above normal
4 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
65.7°
55.9°
+5.4°
3 November – 12 November
49.3°
51°
-0.9°
13 November – 22 November
at normal
46.6°
—
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).
Sun, 2572° / 48°0
72 °
River Grove, Sunday, 25 October
Overcast. High 72°, low 48°.
Pressure30.39 inHg
Wind4.6 mph S
Humidity64%
Visibility6.2 mi
Dew point52°
Mon, 2662° / 51°0
62 °
River Grove, Monday, 26 October
Overcast. High 62°, low 51°.
Pressure30.36 inHg
Wind5.6 mph NE
Humidity80%
Visibility6.2 mi
Dew point55°
Tue, 2765° / 51°0
65 °
River Grove, Tuesday, 27 October
Overcast. High 65°, low 51°.
Pressure30.27 inHg
Wind4.5 mph E
Humidity75%
Visibility6.2 mi
Dew point54°
Wed, 2870° / 54°0
70 °
River Grove, Wednesday, 28 October
Clear. High 70°, low 54°.
Pressure30.18 inHg
Wind8.3 mph S
Humidity59%
Visibility—
Dew point51°
Thu, 2969° / 57°0.04
69 °
River Grove, Thursday, 29 October
Light rain. High 69°, low 57°.
Pressure30.15 inHg
Wind8.7 mph SW
Humidity64%
Visibility—
Dew point55°
Fri, 3063° / 59°0.03
63 °
River Grove, Friday, 30 October
Light rain. High 63°, low 59°.
Pressure30.21 inHg
Wind6.3 mph NE
Humidity83%
Visibility—
Dew point55°
Sat, 3166° / 59°0.34
66 °
River Grove, Saturday, 31 October
Rain. High 66°, low 59°.
Pressure30.09 inHg
Wind9.5 mph SW
Humidity71%
Visibility—
Dew point54°
Sun, 0163° / 58°0.23
63 °
River Grove, Sunday, 1 November
Light rain. High 63°, low 58°.
Pressure30.03 inHg
Wind7.4 mph S
Humidity82%
Visibility—
Dew point55°
Mon, 0259° / 56°0
59 °
River Grove, Monday, 2 November
Overcast. High 59°, low 56°.
Pressure30.12 inHg
Wind9.1 mph E
Humidity63%
Visibility—
Dew point46°
Tue, 0356° / 53°0.52
56 °
River Grove, Tuesday, 3 November
Rain. High 56°, low 53°.
Pressure29.88 inHg
Wind10.8 mph NE
Humidity92%
Visibility—
Dew point51°
Wed, 0456° / 51°0
56 °
River Grove, Wednesday, 4 November
Partly cloudy. High 56°, low 51°.
Pressure29.94 inHg
Wind11.5 mph NE
Humidity46%
Visibility—
Dew point35°
Thu, 0550° / 37°0
50 °
River Grove, Thursday, 5 November
Clear. High 50°, low 37°.
Pressure29.97 inHg
Wind12.2 mph NW
Humidity29%
Visibility—
Dew point16°
Fri, 0640° / 31°0
40 °
River Grove, Friday, 6 November
Clear. High 40°, low 31°.
Pressure30.30 inHg
Wind9.7 mph NW
Humidity30%
Visibility—
Dew point9°
Sat, 0742° / 33°0
42 °
River Grove, Saturday, 7 November
Mostly clear. High 42°, low 33°.
Pressure30.45 inHg
Wind11.6 mph S
Humidity27%
Visibility—
Dew point9°
Sun, 0851° / 40°0.01
51 °
River Grove, Sunday, 8 November
Light rain. High 51°, low 40°.
Pressure30.00 inHg
Wind13 mph SW
Humidity50%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2245° / 32°0.05
45 °
River Grove, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.05 in
Chance of precipitation20%
Record high67° (2010)
Record low11° (2015)
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.