Monthly outlook for Dunn, IL: average high 77.1°, average low 56°. That is 6.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 15 October (94.5°), the coolest 18 October (43.1°).
77.1°/56°
Average high / low
+6.8°
Above normal
3 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
81.2°
66.4°
+8.2°
18 October – 27 October
70.4°
61.7°
+4.8°
28 October – 6 November
at normal
58°
—
October records over 66 years
88.7°7 October 2007All-time high
22.5°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Lake City (9 mi).
Fri, 0985° / 53°0
85 °
Dunn, Friday, 9 October
Overcast. High 85°, low 53°.
Pressure30.15 inHg
Wind9.2 mph S
Humidity34%
Visibility6.2 mi
Dew point48°
Sat, 1081° / 58°0
81 °
Dunn, Saturday, 10 October
Overcast. High 81°, low 58°.
Pressure30.09 inHg
Wind7.4 mph SE
Humidity40%
Visibility6.2 mi
Dew point51°
Sun, 1176° / 61°0
76 °
Dunn, Sunday, 11 October
Overcast. High 76°, low 61°.
Pressure29.91 inHg
Wind7.6 mph N
Humidity65%
Visibility6.2 mi
Dew point57°
Mon, 1287° / 58°0
87 °
Dunn, Monday, 12 October
Clear. High 87°, low 58°.
Pressure29.91 inHg
Wind9.4 mph SW
Humidity44%
Visibility6.2 mi
Dew point58°
Tue, 1388° / 69°0
88 °
Dunn, Tuesday, 13 October
Mostly clear. High 88°, low 69°.
Pressure29.85 inHg
Wind11 mph NE
Humidity40%
Visibility—
Dew point57°
Wed, 1482° / 58°0.02
82 °
Dunn, Wednesday, 14 October
Light rain. High 82°, low 58°.
Pressure29.97 inHg
Wind14.8 mph SE
Humidity48%
Visibility—
Dew point52°
Thu, 1594° / 74°0.02
94 °
Dunn, Thursday, 15 October
Light rain. High 94°, low 74°.
Pressure29.91 inHg
Wind19.8 mph SW
Humidity35%
Visibility—
Dew point60°
Fri, 1677° / 56°0.3
77 °
Dunn, Friday, 16 October
Rain. High 77°, low 56°.
Pressure30.21 inHg
Wind14.6 mph NW
Humidity65%
Visibility—
Dew point53°
Sat, 1761° / 47°0
61 °
Dunn, Saturday, 17 October
Mostly clear. High 61°, low 47°.
Pressure30.53 inHg
Wind15.4 mph NE
Humidity44%
Visibility—
Dew point37°
Sun, 1864° / 43°0
64 °
Dunn, Sunday, 18 October
Overcast. High 64°, low 43°.
Pressure30.42 inHg
Wind10 mph E
Humidity28%
Visibility—
Dew point25°
Mon, 1968° / 52°0.06
68 °
Dunn, Monday, 19 October
Light rain. High 68°, low 52°.
Pressure30.24 inHg
Wind15 mph S
Humidity64%
Visibility—
Dew point52°
Tue, 2078° / 61°0.04
78 °
Dunn, Tuesday, 20 October
Light rain. High 78°, low 61°.
Pressure30.15 inHg
Wind12.4 mph SW
Humidity58%
Visibility—
Dew point58°
Wed, 2176° / 58°0.02
76 °
Dunn, Wednesday, 21 October
Light rain. High 76°, low 58°.
Pressure30.06 inHg
Wind8 mph SW
Humidity49%
Visibility—
Dew point52°
Thu, 2274° / 53°0.14
74 °
Dunn, Thursday, 22 October
Light rain. High 74°, low 53°.
Pressure29.91 inHg
Wind20.3 mph SW
Humidity54%
Visibility—
Dew point55°
Fri, 2363° / 44°0
63 °
Dunn, Friday, 23 October
Clear. High 63°, low 44°.
Pressure30.18 inHg
Wind10.2 mph W
Humidity35%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2461° / 46°0.15
61 °
Dunn, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.15 in
Chance of precipitation32%
Record high80° (1963)
Record low23° (1981)
Sun, 2561° / 45°0.13
61 °
Dunn, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.13 in
Chance of precipitation27%
Record high80° (1963)
Record low29° (2013)
Mon, 2660° / 44°0.13
60 °
Dunn, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.13 in
Chance of precipitation30%
Record high82° (1963)
Record low22° (1962)
Tue, 2760° / 44°0.09
60 °
Dunn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.09 in
Chance of precipitation33%
Record high76° (2023)
Record low32° (2001)
Wed, 2859° / 43°0.06
59 °
Dunn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.06 in
Chance of precipitation18%
Record high77° (1999)
Record low27° (1976)
Thu, 2959° / 43°0.07
59 °
Dunn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.07 in
Chance of precipitation22%
Record high79° (2004)
Record low25° (1980)
Fri, 3061° / 45°0.11
61 °
Dunn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.11 in
Chance of precipitation32%
Record high80° (1971)
Record low25° (1980)
Sat, 3160° / 45°0.17
60 °
Dunn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.17 in
Chance of precipitation40%
Record high76° (1974)
Record low27° (2023)
Sun, 0159° / 44°0.2
59 °
Dunn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.2 in
Chance of precipitation32%
Record high77° (2016)
Record low26° (1993)
Mon, 0258° / 42°0.09
58 °
Dunn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.09 in
Chance of precipitation30%
Record high77° (2016)
Record low26° (2020)
Tue, 0356° / 41°0.09
56 °
Dunn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.09 in
Chance of precipitation30%
Record high76° (1987)
Record low19° (1991)
Wed, 0456° / 43°0.1
56 °
Dunn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.1 in
Chance of precipitation28%
Record high75° (2022)
Record low17° (1991)
Thu, 0556° / 41°0.11
56 °
Dunn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (1978)
Record low20° (1991)
Fri, 0655° / 40°0.08
55 °
Dunn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.08 in
Chance of precipitation28%
Record high73° (2023)
Record low26° (1982)
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 Dunn, 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 Dunn, 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.