Monthly outlook for Garden Plain, IL: average high 57.6°, average low 45.4°. That is 2° above the climate normal for October. Precipitation is expected on 8 days (about 3.1 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 28 October (74°), the coolest 7 November (27°).
57.6°/45.4°
Average high / low
+2°
Above normal
8 / 4
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
65.1°
55.4°
+5.4°
5 November – 14 November
45.2°
49.8°
-2.6°
15 November – 24 November
at normal
46.1°
—
October records over 66 years
88.2°3 October 2025All-time high
17.8°28 October 1967All-time low
Climate normals and records are computed from the nearest reference point — Princeton (15 mi).
Tue, 2770° / 50°0
70 °
Garden Plain, Tuesday, 27 October
Overcast. High 70°, low 50°.
Pressure30.21 inHg
Wind5.6 mph SE
Humidity72%
Visibility6.2 mi
Dew point52°
Wed, 2874° / 53°0
74 °
Garden Plain, Wednesday, 28 October
Overcast. High 74°, low 53°.
Pressure30.15 inHg
Wind6.7 mph S
Humidity62%
Visibility6.2 mi
Dew point54°
Thu, 2967° / 51°0.07
67 °
Garden Plain, Thursday, 29 October
Light rain. High 67°, low 51°.
Pressure30.09 inHg
Wind6.6 mph NW
Humidity86%
Visibility6.2 mi
Dew point60°
Fri, 3064° / 46°0.41
64 °
Garden Plain, Friday, 30 October
Rain. High 64°, low 46°.
Pressure30.24 inHg
Wind5.8 mph SE
Humidity62%
Visibility6.2 mi
Dew point47°
Sat, 3165° / 54°0.3
65 °
Garden Plain, Saturday, 31 October
Rain. High 65°, low 54°.
Pressure30.12 inHg
Wind6.3 mph SW
Humidity83%
Visibility—
Dew point58°
Sun, 0164° / 55°0.09
64 °
Garden Plain, Sunday, 1 November
Light rain. High 64°, low 55°.
Pressure29.97 inHg
Wind6.7 mph N
Humidity72%
Visibility—
Dew point54°
Mon, 0260° / 51°0.02
60 °
Garden Plain, Monday, 2 November
Light rain. High 60°, low 51°.
Pressure29.85 inHg
Wind15.9 mph E
Humidity73%
Visibility—
Dew point50°
Tue, 0361° / 56°0.8
61 °
Garden Plain, Tuesday, 3 November
Rain. High 61°, low 56°.
Pressure29.77 inHg
Wind21.8 mph E
Humidity92%
Visibility—
Dew point58°
Wed, 0460° / 50°1.13
60 °
Garden Plain, Wednesday, 4 November
Heavy rain. High 60°, low 50°.
Pressure29.44 inHg
Wind33.4 mph SW
Humidity78%
Visibility—
Dew point48°
Thu, 0549° / 35°0.09
49 °
Garden Plain, Thursday, 5 November
Light rain. High 49°, low 35°.
Pressure29.56 inHg
Wind24.8 mph NW
Humidity80%
Visibility—
Dew point34°
Fri, 0638° / 31°0.03
38 °
Garden Plain, Friday, 6 November
Light snow. High 38°, low 31°.
Pressure29.85 inHg
Wind21.7 mph NW
Humidity63%
Visibility—
Dew point26°
Sat, 0740° / 27°0
40 °
Garden Plain, Saturday, 7 November
Clear. High 40°, low 27°.
Pressure30.12 inHg
Wind11.5 mph NW
Humidity44%
Visibility—
Dew point17°
Sun, 0845° / 30°0
45 °
Garden Plain, Sunday, 8 November
Overcast. High 45°, low 30°.
Pressure30.06 inHg
Wind14.7 mph S
Humidity48%
Visibility—
Dew point23°
Mon, 0952° / 45°0.13
52 °
Garden Plain, Monday, 9 November
Light rain. High 52°, low 45°.
Pressure29.59 inHg
Wind15.6 mph S
Humidity93%
Visibility—
Dew point47°
Tue, 1047° / 40°0
47 °
Garden Plain, Tuesday, 10 November
Overcast. High 47°, low 40°.
Pressure29.77 inHg
Wind12.6 mph W
Humidity63%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1148° / 33°0.07
48 °
Garden Plain, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1964)
Record low15° (2019)
Thu, 1246° / 32°0.06
46 °
Garden Plain, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1964)
Record low7° (2019)
Fri, 1347° / 32°0.05
47 °
Garden Plain, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.05 in
Chance of precipitation25%
Record high72° (1999)
Record low6° (1986)
Sat, 1448° / 33°0.06
48 °
Garden Plain, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high70° (2025)
Record low14° (1986)
Sun, 1547° / 34°0.07
47 °
Garden Plain, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation28%
Record high69° (2025)
Record low18° (1982)
Mon, 1648° / 33°0.06
48 °
Garden Plain, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1971)
Record low17° (1997)
Tue, 1748° / 34°0.13
48 °
Garden Plain, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.13 in
Chance of precipitation25%
Record high73° (2016)
Record low14° (2005)
Wed, 1848° / 34°0.07
48 °
Garden Plain, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation30%
Record high70° (1999)
Record low11° (2014)
Thu, 1948° / 33°0.06
48 °
Garden Plain, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1979)
Record low16° (2022)
Fri, 2046° / 32°0.1
46 °
Garden Plain, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.1 in
Chance of precipitation32%
Record high65° (2003)
Record low16° (2022)
Sat, 2144° / 30°0.08
44 °
Garden Plain, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.08 in
Chance of precipitation22%
Record high66° (1990)
Record low7° (1964)
Sun, 2245° / 30°0.03
45 °
Garden Plain, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.03 in
Chance of precipitation15%
Record high67° (2010)
Record low4° (2015)
Mon, 2344° / 31°0.08
44 °
Garden Plain, Monday, 23 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.08 in
Chance of precipitation30%
Record high65° (1966)
Record low11° (1970)
Tue, 2443° / 29°0.08
43 °
Garden Plain, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.08 in
Chance of precipitation25%
Record high64° (1966)
Record low8° (1985)
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 Garden Plain, 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 Garden Plain, 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.