Monthly outlook for Collinsville, IL: average high 56.9°, average low 41.8°. That is 2.8° above the climate normal for November. Precipitation is expected on 5 days (about 2.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 19 November (69.7°), the coolest 15 November (32.1°).
56.9°/41.8°
Average high / low
+2.8°
Above normal
5 / 5
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
56.8°
53°
+2.1°
22 November – 1 December
57.2°
48.7°
+4.7°
2 December – 11 December
at normal
44.2°
—
November records over 66 years
79.9°8 November 2023All-time high
3.7°8 November 1991All-time low
Climate normals and records are computed from the nearest reference point — Edwardsville (8 mi).
Fri, 1348° / 40°0
48 °
Collinsville, Friday, 13 November
Overcast. High 48°, low 40°.
Pressure30.12 inHg
Wind11.2 mph N
Humidity60%
Visibility6.2 mi
Dew point26°
Sat, 1446° / 33°0
46 °
Collinsville, Saturday, 14 November
Clear. High 46°, low 33°.
Pressure30.33 inHg
Wind3 mph N
Humidity58%
Visibility6.2 mi
Dew point26°
Sun, 1548° / 32°0
48 °
Collinsville, Sunday, 15 November
Overcast. High 48°, low 32°.
Pressure30.47 inHg
Wind0.7 mph N
Humidity52%
Visibility6.2 mi
Dew point29°
Mon, 1652° / 33°0
52 °
Collinsville, Monday, 16 November
Clear. High 52°, low 33°.
Pressure30.50 inHg
Wind4.4 mph SE
Humidity49%
Visibility—
Dew point30°
Tue, 1754° / 35°0
54 °
Collinsville, Tuesday, 17 November
Clear. High 54°, low 35°.
Pressure30.47 inHg
Wind4.7 mph E
Humidity52%
Visibility—
Dew point33°
Wed, 1864° / 39°0
64 °
Collinsville, Wednesday, 18 November
Mostly clear. High 64°, low 39°.
Pressure30.33 inHg
Wind12.6 mph S
Humidity37%
Visibility—
Dew point32°
Thu, 1970° / 48°0
70 °
Collinsville, Thursday, 19 November
Light rain. High 70°, low 48°.
Pressure30.18 inHg
Wind14 mph SW
Humidity39%
Visibility—
Dew point38°
Fri, 2064° / 51°0.11
64 °
Collinsville, Friday, 20 November
Light rain. High 64°, low 51°.
Pressure30.24 inHg
Wind9.5 mph SW
Humidity60%
Visibility—
Dew point48°
Sat, 2170° / 58°0
70 °
Collinsville, Saturday, 21 November
Overcast. High 70°, low 58°.
Pressure30.15 inHg
Wind11.6 mph S
Humidity45%
Visibility—
Dew point45°
Sun, 2269° / 58°0.04
69 °
Collinsville, Sunday, 22 November
Light rain. High 69°, low 58°.
Pressure29.85 inHg
Wind17.8 mph S
Humidity34%
Visibility—
Dew point38°
Mon, 2362° / 54°1.3
62 °
Collinsville, Monday, 23 November
Heavy rain. High 62°, low 54°.
Pressure29.65 inHg
Wind16.4 mph S
Humidity86%
Visibility—
Dew point55°
Tue, 2461° / 39°0.59
61 °
Collinsville, Tuesday, 24 November
Heavy rain. High 61°, low 39°.
Pressure29.65 inHg
Wind22.8 mph SW
Humidity62%
Visibility—
Dew point34°
Wed, 2543° / 33°0
43 °
Collinsville, Wednesday, 25 November
Clear. High 43°, low 33°.
Pressure30.33 inHg
Wind13.5 mph W
Humidity47%
Visibility—
Dew point21°
Thu, 2646° / 33°0
46 °
Collinsville, Thursday, 26 November
Overcast. High 46°, low 33°.
Pressure30.30 inHg
Wind12.9 mph SE
Humidity45%
Visibility—
Dew point22°
Fri, 2762° / 44°0.85
62 °
Collinsville, Friday, 27 November
Rain. High 62°, low 44°.
Pressure29.71 inHg
Wind27.2 mph S
Humidity93%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2846° / 33°0.11
46 °
Collinsville, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation27%
Record high69° (1998)
Record low9° (1977)
Sun, 2947° / 34°0.08
47 °
Collinsville, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.08 in
Chance of precipitation25%
Record high69° (1998)
Record low15° (1976)
Mon, 3048° / 34°0.18
48 °
Collinsville, Monday, 30 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.18 in
Chance of precipitation33%
Record high67° (2014)
Record low11° (1964)
Tue, 0146° / 33°0.12
46 °
Collinsville, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.12 in
Chance of precipitation30%
Record high69° (1970)
Record low15° (1985)
Wed, 0247° / 33°0.09
47 °
Collinsville, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.09 in
Chance of precipitation23%
Record high71° (2012)
Record low11° (1985)
Thu, 0346° / 33°0.13
46 °
Collinsville, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation30%
Record high72° (1998)
Record low11° (1985)
Fri, 0445° / 32°0.08
45 °
Collinsville, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.08 in
Chance of precipitation27%
Record high70° (1998)
Record low2° (2006)
Sat, 0546° / 31°0.09
46 °
Collinsville, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.09 in
Chance of precipitation32%
Record high71° (1998)
Record low7° (2025)
Sun, 0644° / 31°0.06
44 °
Collinsville, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.06 in
Chance of precipitation37%
Record high70° (1998)
Record low6° (1977)
Mon, 0742° / 30°0.09
42 °
Collinsville, Monday, 7 December
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.09 in
Chance of precipitation22%
Record high66° (1980)
Record low-1° (1977)
Tue, 0843° / 31°0.08
43 °
Collinsville, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.08 in
Chance of precipitation32%
Record high68° (1991)
Record low4° (2006)
Wed, 0943° / 30°0.07
43 °
Collinsville, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.07 in
Chance of precipitation32%
Record high59° (1965)
Record low3° (1977)
Thu, 1043° / 29°0.11
43 °
Collinsville, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.11 in
Chance of precipitation23%
Record high66° (2021)
Record low-2° (1977)
Fri, 1143° / 29°0.1
43 °
Collinsville, Friday, 11 December
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.1 in
Chance of precipitation30%
Record high64° (2021)
Record low6° (1977)
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 Collinsville, 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 Collinsville, 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.