Monthly outlook for Illiana, IL: average high 63.4°, average low 50°. That is 5.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 16 November (76.1°), the coolest 13 November (37.6°).
63.4°/50°
Average high / low
+5.7°
Above normal
2 / 5
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
1 November – 10 November
62.7°
55.2°
+4.1°
11 November – 20 November
64.7°
49.8°
+8.3°
21 November – 30 November
at normal
45.9°
—
November records over 66 years
76.5°2 November 1961All-time high
5.2°22 November 2015All-time low
Climate normals and records are computed from the nearest reference point — Pence (12 mi).
Mon, 0266° / 56°0.01
66 °
Illiana, Monday, 2 November
Light rain. High 66°, low 56°.
Pressure30.12 inHg
Wind10.3 mph SE
Humidity82%
Visibility6.2 mi
Dew point55°
Tue, 0374° / 63°0
74 °
Illiana, Tuesday, 3 November
Mostly clear. High 74°, low 63°.
Pressure29.91 inHg
Wind15.9 mph S
Humidity65%
Visibility6.2 mi
Dew point59°
Wed, 0467° / 58°0.15
67 °
Illiana, Wednesday, 4 November
Rain. High 67°, low 58°.
Pressure29.71 inHg
Wind13.4 mph SW
Humidity66%
Visibility6.2 mi
Dew point52°
Thu, 0562° / 54°0
62 °
Illiana, Thursday, 5 November
Overcast. High 62°, low 54°.
Pressure29.74 inHg
Wind14.4 mph SW
Humidity55%
Visibility—
Dew point45°
Fri, 0658° / 51°0.03
58 °
Illiana, Friday, 6 November
Light rain. High 58°, low 51°.
Pressure29.85 inHg
Wind11.2 mph NW
Humidity72%
Visibility—
Dew point48°
Sat, 0761° / 50°0
61 °
Illiana, Saturday, 7 November
Mostly clear. High 61°, low 50°.
Pressure29.91 inHg
Wind10.6 mph W
Humidity51%
Visibility—
Dew point41°
Sun, 0859° / 44°0
59 °
Illiana, Sunday, 8 November
Clear. High 59°, low 44°.
Pressure29.83 inHg
Wind17.6 mph NW
Humidity36%
Visibility—
Dew point29°
Mon, 0958° / 39°0
58 °
Illiana, Monday, 9 November
Partly cloudy. High 58°, low 39°.
Pressure30.06 inHg
Wind8 mph W
Humidity38%
Visibility—
Dew point27°
Tue, 1059° / 43°0
59 °
Illiana, Tuesday, 10 November
Overcast. High 59°, low 43°.
Pressure30.21 inHg
Wind7.8 mph NE
Humidity38%
Visibility—
Dew point31°
Wed, 1165° / 46°0.01
65 °
Illiana, Wednesday, 11 November
Light rain. High 65°, low 46°.
Pressure29.94 inHg
Wind10.4 mph SW
Humidity51%
Visibility—
Dew point43°
Thu, 1251° / 40°0
51 °
Illiana, Thursday, 12 November
Overcast. High 51°, low 40°.
Pressure30.15 inHg
Wind12.1 mph N
Humidity35%
Visibility—
Dew point22°
Fri, 1361° / 38°0
61 °
Illiana, Friday, 13 November
Overcast. High 61°, low 38°.
Pressure30.03 inHg
Wind12.8 mph S
Humidity27%
Visibility—
Dew point21°
Sat, 1467° / 45°0.03
67 °
Illiana, Saturday, 14 November
Light rain. High 67°, low 45°.
Pressure29.80 inHg
Wind19.1 mph SW
Humidity46%
Visibility—
Dew point42°
Sun, 1569° / 54°0.19
69 °
Illiana, Sunday, 15 November
Light rain. High 69°, low 54°.
Pressure29.62 inHg
Wind16.2 mph SW
Humidity61%
Visibility—
Dew point52°
Mon, 1676° / 64°0
76 °
Illiana, Monday, 16 November
Overcast. High 76°, low 64°.
Pressure29.50 inHg
Wind24.3 mph SW
Humidity58%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1750° / 35°0.12
50 °
Illiana, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.12 in
Chance of precipitation25%
Record high70° (2016)
Record low15° (2005)
Wed, 1850° / 36°0.14
50 °
Illiana, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.14 in
Chance of precipitation30%
Record high71° (2016)
Record low12° (2014)
Thu, 1950° / 36°0.08
50 °
Illiana, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.08 in
Chance of precipitation38%
Record high68° (1985)
Record low17° (2014)
Fri, 2049° / 35°0.1
49 °
Illiana, Friday, 20 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation25%
Record high66° (2007)
Record low15° (1969)
Sat, 2147° / 34°0.11
47 °
Illiana, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.11 in
Chance of precipitation33%
Record high69° (1990)
Record low10° (1964)
Sun, 2247° / 32°0.08
47 °
Illiana, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.08 in
Chance of precipitation20%
Record high70° (2010)
Record low5° (2015)
Mon, 2348° / 33°0.11
48 °
Illiana, Monday, 23 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.11 in
Chance of precipitation30%
Record high67° (1999)
Record low12° (1970)
Tue, 2446° / 31°0.1
46 °
Illiana, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.1 in
Chance of precipitation27%
Record high65° (1966)
Record low12° (1970)
Wed, 2547° / 33°0.16
47 °
Illiana, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.16 in
Chance of precipitation37%
Record high61° (2024)
Record low16° (1991)
Thu, 2647° / 32°0.13
47 °
Illiana, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.13 in
Chance of precipitation40%
Record high65° (1990)
Record low7° (1977)
Fri, 2746° / 33°0.23
46 °
Illiana, Friday, 27 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.23 in
Chance of precipitation53%
Record high68° (1990)
Record low15° (2013)
Sat, 2843° / 30°0.13
43 °
Illiana, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.13 in
Chance of precipitation33%
Record high67° (1990)
Record low13° (1977)
Sun, 2944° / 30°0.08
44 °
Illiana, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.08 in
Chance of precipitation30%
Record high67° (1998)
Record low8° (1976)
Mon, 3045° / 31°0.15
45 °
Illiana, Monday, 30 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.15 in
Chance of precipitation32%
Record high65° (1998)
Record low11° (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 Illiana, 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 Illiana, 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.