Monthly outlook for Mountjoy, IL: average high 66.6°, average low 51.4°. That is 5.5° above the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 29 October (74.7°), the coolest 6 November (42.8°).
66.6°/51.4°
Average high / low
+5.5°
Above normal
5 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
71.1°
58.1°
+7.2°
4 November – 13 November
59°
52.8°
+3.5°
14 November – 23 November
at normal
49°
—
October records over 66 years
89.1°7 October 2007All-time high
19.6°22 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Shirley (14 mi).
Mon, 2673° / 51°0
73 °
Mountjoy, Monday, 26 October
Overcast. High 73°, low 51°.
Pressure30.33 inHg
Wind2.1 mph S
Humidity52%
Visibility6.2 mi
Dew point51°
Tue, 2771° / 51°0
71 °
Mountjoy, Tuesday, 27 October
Overcast. High 71°, low 51°.
Pressure30.24 inHg
Wind8.1 mph S
Humidity55%
Visibility6.2 mi
Dew point51°
Wed, 2871° / 55°0.02
71 °
Mountjoy, Wednesday, 28 October
Light rain. High 71°, low 55°.
Pressure30.21 inHg
Wind5.9 mph S
Humidity65%
Visibility6.2 mi
Dew point53°
Thu, 2975° / 57°0.02
75 °
Mountjoy, Thursday, 29 October
Light rain. High 75°, low 57°.
Pressure30.12 inHg
Wind9.8 mph SW
Humidity60%
Visibility6.2 mi
Dew point56°
Fri, 3069° / 56°0
69 °
Mountjoy, Friday, 30 October
Overcast. High 69°, low 56°.
Pressure30.24 inHg
Wind6.7 mph E
Humidity67%
Visibility—
Dew point55°
Sat, 3166° / 59°0.08
66 °
Mountjoy, Saturday, 31 October
Light rain. High 66°, low 59°.
Pressure30.12 inHg
Wind7.9 mph SW
Humidity54%
Visibility—
Dew point48°
Sun, 0168° / 59°0.42
68 °
Mountjoy, Sunday, 1 November
Rain. High 68°, low 59°.
Pressure30.03 inHg
Wind10 mph SE
Humidity94%
Visibility—
Dew point59°
Mon, 0272° / 56°0
72 °
Mountjoy, Monday, 2 November
Overcast. High 72°, low 56°.
Pressure30.00 inHg
Wind16.8 mph S
Humidity55%
Visibility—
Dew point51°
Tue, 0372° / 57°0.1
72 °
Mountjoy, Tuesday, 3 November
Light rain. High 72°, low 57°.
Pressure29.83 inHg
Wind16.5 mph S
Humidity46%
Visibility—
Dew point49°
Wed, 0463° / 48°0
63 °
Mountjoy, Wednesday, 4 November
Clear. High 63°, low 48°.
Pressure29.83 inHg
Wind19 mph W
Humidity29%
Visibility—
Dew point28°
Thu, 0559° / 46°0
59 °
Mountjoy, Thursday, 5 November
Overcast. High 59°, low 46°.
Pressure29.83 inHg
Wind12 mph NW
Humidity53%
Visibility—
Dew point38°
Fri, 0658° / 43°0
58 °
Mountjoy, Friday, 6 November
Clear. High 58°, low 43°.
Pressure29.80 inHg
Wind12.1 mph NW
Humidity51%
Visibility—
Dew point37°
Sat, 0766° / 45°0.02
66 °
Mountjoy, Saturday, 7 November
Light rain. High 66°, low 45°.
Pressure29.68 inHg
Wind16.4 mph SE
Humidity40%
Visibility—
Dew point37°
Sun, 0857° / 47°0.17
57 °
Mountjoy, Sunday, 8 November
Light rain. High 57°, low 47°.
Pressure29.50 inHg
Wind18.7 mph W
Humidity59%
Visibility—
Dew point42°
Mon, 0952° / 43°0.08
52 °
Mountjoy, Monday, 9 November
Light rain. High 52°, low 43°.
Pressure29.97 inHg
Wind21.2 mph NW
Humidity50%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1053° / 38°0.16
53 °
Mountjoy, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.16 in
Chance of precipitation30%
Record high72° (2020)
Record low17° (2018)
Wed, 1151° / 35°0.07
51 °
Mountjoy, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high73° (1964)
Record low18° (2019)
Thu, 1249° / 34°0.07
49 °
Mountjoy, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (2010)
Record low9° (2019)
Fri, 1349° / 34°0.06
49 °
Mountjoy, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.06 in
Chance of precipitation20%
Record high72° (1999)
Record low8° (1986)
Sat, 1451° / 35°0.07
51 °
Mountjoy, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation35%
Record high73° (1971)
Record low13° (1986)
Sun, 1550° / 36°0.09
50 °
Mountjoy, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.09 in
Chance of precipitation28%
Record high71° (2025)
Record low18° (2014)
Mon, 1649° / 35°0.07
49 °
Mountjoy, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation18%
Record high70° (1971)
Record low21° (1997)
Tue, 1751° / 35°0.11
51 °
Mountjoy, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.11 in
Chance of precipitation28%
Record high73° (2016)
Record low16° (2005)
Wed, 1850° / 36°0.18
50 °
Mountjoy, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.18 in
Chance of precipitation33%
Record high69° (1999)
Record low12° (2014)
Thu, 1950° / 36°0.08
50 °
Mountjoy, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.08 in
Chance of precipitation28%
Record high69° (1979)
Record low18° (2014)
Fri, 2049° / 35°0.11
49 °
Mountjoy, Friday, 20 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.11 in
Chance of precipitation32%
Record high67° (2007)
Record low16° (2022)
Sat, 2147° / 33°0.1
47 °
Mountjoy, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.1 in
Chance of precipitation30%
Record high69° (1990)
Record low10° (1964)
Sun, 2247° / 32°0.06
47 °
Mountjoy, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (2010)
Record low5° (2015)
Mon, 2347° / 33°0.08
47 °
Mountjoy, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.08 in
Chance of precipitation27%
Record high66° (2003)
Record low12° (1970)
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 Mountjoy, 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 Mountjoy, 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.