Monthly outlook for Anderson, IL: average high 70.4°, average low 51.1°. That is 6.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 29 October (77.2°), the coolest 4 November (41.5°).
70.4°/51.1°
Average high / low
+6.7°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
73.2°
59.9°
+7.4°
2 November – 11 November
65.8°
55°
+6°
12 November – 21 November
at normal
50.7°
—
October records over 66 years
89.4°3 October 2006All-time high
26.1°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Browning (15 mi).
Sat, 2474° / 48°0
74 °
Anderson, Saturday, 24 October
Overcast. High 74°, low 48°.
Pressure30.36 inHg
Wind6 mph S
Humidity48%
Visibility6.2 mi
Dew point49°
Sun, 2575° / 48°0
75 °
Anderson, Sunday, 25 October
Overcast. High 75°, low 48°.
Pressure30.39 inHg
Wind3.5 mph S
Humidity50%
Visibility6.2 mi
Dew point51°
Mon, 2675° / 54°0
75 °
Anderson, Monday, 26 October
Overcast. High 75°, low 54°.
Pressure30.30 inHg
Wind1.7 mph SE
Humidity51%
Visibility6.2 mi
Dew point53°
Tue, 2772° / 53°0
72 °
Anderson, Tuesday, 27 October
Overcast. High 72°, low 53°.
Pressure30.24 inHg
Wind4.5 mph S
Humidity57%
Visibility6.2 mi
Dew point52°
Wed, 2875° / 55°0
75 °
Anderson, Wednesday, 28 October
Clear. High 75°, low 55°.
Pressure30.18 inHg
Wind7.7 mph S
Humidity48%
Visibility—
Dew point49°
Thu, 2977° / 56°0
77 °
Anderson, Thursday, 29 October
Clear. High 77°, low 56°.
Pressure30.21 inHg
Wind9.6 mph S
Humidity40%
Visibility—
Dew point47°
Fri, 3077° / 63°0
77 °
Anderson, Friday, 30 October
Overcast. High 77°, low 63°.
Pressure30.15 inHg
Wind11.3 mph S
Humidity53%
Visibility—
Dew point52°
Sat, 3166° / 59°0.12
66 °
Anderson, Saturday, 31 October
Light rain. High 66°, low 59°.
Pressure30.09 inHg
Wind17 mph S
Humidity65%
Visibility—
Dew point51°
Sun, 0167° / 51°0.03
67 °
Anderson, Sunday, 1 November
Light rain. High 67°, low 51°.
Pressure29.97 inHg
Wind18 mph S
Humidity57%
Visibility—
Dew point49°
Mon, 0260° / 43°0
60 °
Anderson, Monday, 2 November
Clear. High 60°, low 43°.
Pressure30.18 inHg
Wind12.2 mph NW
Humidity32%
Visibility—
Dew point26°
Tue, 0357° / 43°0
57 °
Anderson, Tuesday, 3 November
Overcast. High 57°, low 43°.
Pressure30.12 inHg
Wind11.7 mph NW
Humidity29%
Visibility—
Dew point23°
Wed, 0461° / 41°0
61 °
Anderson, Wednesday, 4 November
Overcast. High 61°, low 41°.
Pressure30.00 inHg
Wind11.5 mph S
Humidity30%
Visibility—
Dew point25°
Thu, 0571° / 45°0
71 °
Anderson, Thursday, 5 November
Mostly clear. High 71°, low 45°.
Pressure30.03 inHg
Wind7 mph SW
Humidity35%
Visibility—
Dew point35°
Fri, 0677° / 56°0
77 °
Anderson, Friday, 6 November
Partly cloudy. High 77°, low 56°.
Pressure30.06 inHg
Wind15.4 mph SW
Humidity48%
Visibility—
Dew point51°
Sat, 0770° / 54°0
70 °
Anderson, Saturday, 7 November
Partly cloudy. High 70°, low 54°.
Pressure30.15 inHg
Wind13.3 mph NW
Humidity35%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0855° / 40°0.04
55 °
Anderson, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.04 in
Chance of precipitation18%
Record high77° (1999)
Record low2° (1991)
Mon, 0956° / 41°0.12
56 °
Anderson, Monday, 9 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.12 in
Chance of precipitation32%
Record high74° (1999)
Record low5° (1991)
Tue, 1053° / 39°0.17
53 °
Anderson, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.17 in
Chance of precipitation28%
Record high74° (2020)
Record low18° (2018)
Wed, 1152° / 37°0.06
52 °
Anderson, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high76° (1964)
Record low18° (2019)
Thu, 1250° / 35°0.06
50 °
Anderson, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (2010)
Record low10° (2019)
Fri, 1351° / 36°0.06
51 °
Anderson, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (1999)
Record low9° (1986)
Sat, 1452° / 37°0.07
52 °
Anderson, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high75° (2025)
Record low14° (1986)
Sun, 1551° / 37°0.07
51 °
Anderson, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high73° (2025)
Record low19° (2019)
Mon, 1651° / 37°0.07
51 °
Anderson, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high71° (2001)
Record low21° (1997)
Tue, 1752° / 37°0.13
52 °
Anderson, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.13 in
Chance of precipitation28%
Record high74° (2016)
Record low19° (2014)
Wed, 1851° / 38°0.15
51 °
Anderson, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.15 in
Chance of precipitation28%
Record high71° (1999)
Record low14° (2014)
Thu, 1951° / 37°0.07
51 °
Anderson, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation25%
Record high71° (1979)
Record low20° (2022)
Fri, 2050° / 36°0.11
50 °
Anderson, Friday, 20 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.11 in
Chance of precipitation30%
Record high73° (2007)
Record low18° (2022)
Sat, 2148° / 35°0.09
48 °
Anderson, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation27%
Record high67° (1990)
Record low12° (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 Anderson, 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 Anderson, 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.