Monthly outlook for Casner, IL: average high 71.9°, average low 51.5°. That is 4.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (87.1°), the coolest 18 October (33.5°).
71.9°/51.5°
Average high / low
+4.1°
Above normal
2 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
73.2°
65.8°
+4.1°
19 October – 28 October
69.6°
61.4°
+4.6°
29 October – 7 November
at normal
57.6°
—
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 (5 mi).
Sat, 1078° / 55°0
78 °
Casner, Saturday, 10 October
Overcast. High 78°, low 55°.
Pressure30.09 inHg
Wind7.2 mph SE
Humidity47%
Visibility6.2 mi
Dew point53°
Sun, 1180° / 53°0
80 °
Casner, Sunday, 11 October
Clear. High 80°, low 53°.
Pressure29.94 inHg
Wind4.6 mph NW
Humidity56%
Visibility6.2 mi
Dew point57°
Mon, 1286° / 65°0
86 °
Casner, Monday, 12 October
Partly cloudy. High 86°, low 65°.
Pressure29.88 inHg
Wind10.6 mph SW
Humidity44%
Visibility6.2 mi
Dew point59°
Tue, 1387° / 71°0
87 °
Casner, Tuesday, 13 October
Overcast. High 87°, low 71°.
Pressure29.85 inHg
Wind10.2 mph W
Humidity57%
Visibility6.2 mi
Dew point68°
Wed, 1471° / 63°0.2
71 °
Casner, Wednesday, 14 October
Light rain. High 71°, low 63°.
Pressure30.03 inHg
Wind12.8 mph NE
Humidity89%
Visibility—
Dew point64°
Thu, 1581° / 58°0.45
81 °
Casner, Thursday, 15 October
Rain. High 81°, low 58°.
Pressure29.94 inHg
Wind20.5 mph SW
Humidity74%
Visibility—
Dew point61°
Fri, 1669° / 49°0.01
69 °
Casner, Friday, 16 October
Light rain. High 69°, low 49°.
Pressure30.06 inHg
Wind23.2 mph W
Humidity36%
Visibility—
Dew point32°
Sat, 1745° / 38°0
45 °
Casner, Saturday, 17 October
Overcast. High 45°, low 38°.
Pressure30.36 inHg
Wind21.4 mph W
Humidity49%
Visibility—
Dew point26°
Sun, 1852° / 33°0
52 °
Casner, Sunday, 18 October
Clear. High 52°, low 33°.
Pressure30.50 inHg
Wind6.6 mph N
Humidity39%
Visibility—
Dew point24°
Mon, 1958° / 39°0
58 °
Casner, Monday, 19 October
Overcast. High 58°, low 39°.
Pressure30.42 inHg
Wind8.3 mph S
Humidity32%
Visibility—
Dew point24°
Tue, 2065° / 43°0
65 °
Casner, Tuesday, 20 October
Clear. High 65°, low 43°.
Pressure30.42 inHg
Wind6.5 mph SE
Humidity27%
Visibility—
Dew point26°
Wed, 2170° / 46°0
70 °
Casner, Wednesday, 21 October
Clear. High 70°, low 46°.
Pressure30.33 inHg
Wind8.4 mph S
Humidity27%
Visibility—
Dew point29°
Thu, 2273° / 49°0
73 °
Casner, Thursday, 22 October
Clear. High 73°, low 49°.
Pressure30.12 inHg
Wind10.4 mph W
Humidity32%
Visibility—
Dew point37°
Fri, 2375° / 53°0
75 °
Casner, Friday, 23 October
Clear. High 75°, low 53°.
Pressure30.03 inHg
Wind7.2 mph SW
Humidity33%
Visibility—
Dew point40°
Sat, 2477° / 54°0
77 °
Casner, Saturday, 24 October
Mostly clear. High 77°, low 54°.
Pressure30.03 inHg
Wind13 mph SW
Humidity24%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2561° / 45°0.13
61 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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 °
Casner, 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)
Sat, 0755° / 40°0.09
55 °
Casner, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high71° (1980)
Record low18° (1991)
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 Casner, 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 Casner, 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.