Monthly outlook for Apple River, IL: average high 56.6°, average low 40.3°. That is 0.3° below the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 14 October (69.3°), the coolest 26 October (28.7°).
56.6°/40.3°
Average high / low
−0.3°
Below normal
4 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
59.9°
58.5°
+0.8°
24 October – 2 November
51.2°
54.3°
-1.7°
3 November – 12 November
at normal
48.7°
—
October records over 66 years
86°3 October 2025All-time high
22.6°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Gratiot (6 mi).
Thu, 1566° / 55°0.17
66 °
Apple River, Thursday, 15 October
Light rain. High 66°, low 55°.
Pressure29.97 inHg
Wind9.6 mph E
Humidity85%
Visibility6.2 mi
Dew point55°
Fri, 1654° / 43°0.08
54 °
Apple River, Friday, 16 October
Light rain. High 54°, low 43°.
Pressure30.12 inHg
Wind17.4 mph NW
Humidity70%
Visibility6.2 mi
Dew point41°
Sat, 1755° / 34°0
55 °
Apple River, Saturday, 17 October
Clear. High 55°, low 34°.
Pressure30.56 inHg
Wind6 mph SW
Humidity49%
Visibility6.2 mi
Dew point32°
Sun, 1860° / 42°0
60 °
Apple River, Sunday, 18 October
Clear. High 60°, low 42°.
Pressure30.36 inHg
Wind15.3 mph SW
Humidity54%
Visibility—
Dew point39°
Mon, 1962° / 43°0
62 °
Apple River, Monday, 19 October
Overcast. High 62°, low 43°.
Pressure30.33 inHg
Wind9.8 mph S
Humidity56%
Visibility—
Dew point42°
Tue, 2063° / 45°0
63 °
Apple River, Tuesday, 20 October
Clear. High 63°, low 45°.
Pressure30.27 inHg
Wind5.9 mph SW
Humidity61%
Visibility—
Dew point46°
Wed, 2166° / 47°0
66 °
Apple River, Wednesday, 21 October
Clear. High 66°, low 47°.
Pressure30.06 inHg
Wind14.6 mph SW
Humidity64%
Visibility—
Dew point50°
Thu, 2252° / 38°0
52 °
Apple River, Thursday, 22 October
Clear. High 52°, low 38°.
Pressure30.33 inHg
Wind13 mph NE
Humidity44%
Visibility—
Dew point28°
Fri, 2352° / 33°0
52 °
Apple River, Friday, 23 October
Clear. High 52°, low 33°.
Pressure30.45 inHg
Wind7.9 mph E
Humidity47%
Visibility—
Dew point28°
Sat, 2453° / 37°0.04
53 °
Apple River, Saturday, 24 October
Light rain. High 53°, low 37°.
Pressure30.24 inHg
Wind8.9 mph S
Humidity51%
Visibility—
Dew point33°
Sun, 2545° / 35°0.17
45 °
Apple River, Sunday, 25 October
Light rain. High 45°, low 35°.
Pressure30.03 inHg
Wind17.2 mph NW
Humidity59%
Visibility—
Dew point32°
Mon, 2649° / 29°0
49 °
Apple River, Monday, 26 October
Mostly clear. High 49°, low 29°.
Pressure30.06 inHg
Wind8.1 mph W
Humidity44%
Visibility—
Dew point24°
Tue, 2752° / 36°0
52 °
Apple River, Tuesday, 27 October
Clear. High 52°, low 36°.
Pressure30.00 inHg
Wind6.3 mph NE
Humidity52%
Visibility—
Dew point32°
Wed, 2853° / 34°0
53 °
Apple River, Wednesday, 28 October
Partly cloudy. High 53°, low 34°.
Pressure30.00 inHg
Wind7.1 mph E
Humidity46%
Visibility—
Dew point28°
Thu, 2955° / 38°0
55 °
Apple River, Thursday, 29 October
Partly cloudy. High 55°, low 38°.
Pressure29.97 inHg
Wind9.8 mph E
Humidity58%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3056° / 41°0.11
56 °
Apple River, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.11 in
Chance of precipitation32%
Record high76° (2024)
Record low23° (1988)
Sat, 3154° / 41°0.11
54 °
Apple River, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.11 in
Chance of precipitation33%
Record high69° (1968)
Record low24° (2019)
Sun, 0153° / 40°0.21
53 °
Apple River, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.21 in
Chance of precipitation38%
Record high74° (2000)
Record low21° (2019)
Mon, 0252° / 39°0.11
52 °
Apple River, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high70° (1961)
Record low19° (1991)
Tue, 0351° / 38°0.06
51 °
Apple River, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.06 in
Chance of precipitation25%
Record high71° (1964)
Record low15° (1991)
Wed, 0451° / 38°0.09
51 °
Apple River, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.09 in
Chance of precipitation27%
Record high70° (2008)
Record low13° (1991)
Thu, 0550° / 37°0.09
50 °
Apple River, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.09 in
Chance of precipitation23%
Record high69° (1978)
Record low19° (1991)
Fri, 0650° / 36°0.07
50 °
Apple River, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.07 in
Chance of precipitation28%
Record high68° (2020)
Record low16° (1991)
Sat, 0749° / 36°0.03
49 °
Apple River, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2009)
Record low5° (1991)
Sun, 0849° / 36°0.05
49 °
Apple River, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.05 in
Chance of precipitation17%
Record high71° (2020)
Record low12° (1991)
Mon, 0949° / 36°0.11
49 °
Apple River, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation35%
Record high71° (2020)
Record low17° (1991)
Tue, 1047° / 34°0.09
47 °
Apple River, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation32%
Record high71° (2022)
Record low14° (2017)
Wed, 1145° / 32°0.07
45 °
Apple River, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (1964)
Record low13° (2019)
Thu, 1244° / 31°0.06
44 °
Apple River, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high65° (1964)
Record low4° (2019)
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 Apple River, 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 Apple River, 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.