Monthly outlook for Porterfield, IL: average high 52.7°, average low 39°. That is 3.4° above the climate normal for November. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 29 November (63.5°), the coolest 15 November (28°).
52.7°/39°
Average high / low
+3.4°
Above normal
6 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
53.2°
48.3°
+2.8°
24 November – 3 December
51.8°
42.8°
+5°
4 December – 13 December
at normal
37.9°
—
November records over 66 years
77.4°1 November 2016All-time high
1.8°22 November 2015All-time low
Climate normals and records are computed from the nearest reference point — Toluca (6 mi).
Sun, 1550° / 28°0
50 °
Porterfield, Sunday, 15 November
Clear. High 50°, low 28°.
Pressure30.47 inHg
Wind2.4 mph W
Humidity57%
Visibility6.2 mi
Dew point29°
Mon, 1651° / 31°0
51 °
Porterfield, Monday, 16 November
Clear. High 51°, low 31°.
Pressure30.53 inHg
Wind5.5 mph SW
Humidity51%
Visibility6.2 mi
Dew point32°
Tue, 1754° / 34°0
54 °
Porterfield, Tuesday, 17 November
Mostly clear. High 54°, low 34°.
Pressure30.50 inHg
Wind8.3 mph SW
Humidity54%
Visibility6.2 mi
Dew point37°
Wed, 1857° / 39°0
57 °
Porterfield, Wednesday, 18 November
Overcast. High 57°, low 39°.
Pressure30.33 inHg
Wind12.5 mph S
Humidity56%
Visibility6.2 mi
Dew point40°
Thu, 1960° / 47°0.05
60 °
Porterfield, Thursday, 19 November
Light rain. High 60°, low 47°.
Pressure30.21 inHg
Wind13 mph S
Humidity55%
Visibility—
Dew point42°
Fri, 2062° / 48°0
62 °
Porterfield, Friday, 20 November
Overcast. High 62°, low 48°.
Pressure30.21 inHg
Wind12.8 mph S
Humidity43%
Visibility—
Dew point36°
Sat, 2161° / 52°0.11
61 °
Porterfield, Saturday, 21 November
Light rain. High 61°, low 52°.
Pressure29.88 inHg
Wind20 mph SW
Humidity82%
Visibility—
Dew point51°
Sun, 2248° / 40°0
48 °
Porterfield, Sunday, 22 November
Overcast. High 48°, low 40°.
Pressure30.30 inHg
Wind17.7 mph NW
Humidity57%
Visibility—
Dew point31°
Mon, 2343° / 32°0
43 °
Porterfield, Monday, 23 November
Clear. High 43°, low 32°.
Pressure30.53 inHg
Wind9.2 mph NE
Humidity48%
Visibility—
Dew point22°
Tue, 2444° / 30°0
44 °
Porterfield, Tuesday, 24 November
Overcast. High 44°, low 30°.
Pressure30.50 inHg
Wind11.4 mph SE
Humidity41%
Visibility—
Dew point19°
Wed, 2540° / 37°0.04
40 °
Porterfield, Wednesday, 25 November
Light rain. High 40°, low 37°.
Pressure30.24 inHg
Wind9.2 mph SE
Humidity77%
Visibility—
Dew point32°
Thu, 2655° / 39°0
55 °
Porterfield, Thursday, 26 November
Partly cloudy. High 55°, low 39°.
Pressure30.39 inHg
Wind15.3 mph E
Humidity61%
Visibility—
Dew point38°
Fri, 2752° / 41°0.21
52 °
Porterfield, Friday, 27 November
Rain. High 52°, low 41°.
Pressure30.24 inHg
Wind16.2 mph SE
Humidity61%
Visibility—
Dew point37°
Sat, 2856° / 48°0.57
56 °
Porterfield, Saturday, 28 November
Rain. High 56°, low 48°.
Pressure30.03 inHg
Wind13.7 mph SE
Humidity86%
Visibility—
Dew point51°
Sun, 2964° / 50°0.04
64 °
Porterfield, Sunday, 29 November
Light rain. High 64°, low 50°.
Pressure30.00 inHg
Wind10.5 mph S
Humidity63%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3042° / 29°0.09
42 °
Porterfield, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.09 in
Chance of precipitation28%
Record high65° (1998)
Record low10° (1964)
Tue, 0140° / 28°0.14
40 °
Porterfield, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.14 in
Chance of precipitation35%
Record high64° (1970)
Record low10° (1985)
Wed, 0241° / 28°0.07
41 °
Porterfield, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.07 in
Chance of precipitation27%
Record high70° (1982)
Record low5° (2006)
Thu, 0341° / 28°0.09
41 °
Porterfield, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation33%
Record high70° (2012)
Record low4° (2006)
Fri, 0440° / 27°0.07
40 °
Porterfield, Friday, 4 December
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (1998)
Record low-3° (1991)
Sat, 0540° / 26°0.07
40 °
Porterfield, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (2001)
Record low-3° (2006)
Sun, 0638° / 25°0.06
38 °
Porterfield, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.06 in
Chance of precipitation22%
Record high64° (1980)
Record low-7° (1964)
Mon, 0737° / 25°0.11
37 °
Porterfield, Monday, 7 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.11 in
Chance of precipitation28%
Record high58° (1980)
Record low-8° (1977)
Tue, 0837° / 25°0.06
37 °
Porterfield, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.06 in
Chance of precipitation22%
Record high65° (1991)
Record low-6° (2006)
Wed, 0938° / 24°0.07
38 °
Porterfield, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation35%
Record high54° (1990)
Record low-7° (1977)
Thu, 1037° / 23°0.09
37 °
Porterfield, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.09 in
Chance of precipitation22%
Record high59° (2021)
Record low-11° (1977)
Fri, 1137° / 23°0.09
37 °
Porterfield, Friday, 11 December
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.09 in
Chance of precipitation30%
Record high60° (2021)
Record low-12° (1972)
Sat, 1237° / 24°0.07
37 °
Porterfield, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (2015)
Record low-10° (2000)
Sun, 1338° / 24°0.07
38 °
Porterfield, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation30%
Record high62° (2015)
Record low-13° (2000)
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 Porterfield, 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 Porterfield, 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.