Monthly outlook for Oldenburg, IL: average high 70°, average low 51.2°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 2.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 12 October (89.7°), the coolest 18 October (31.1°).
70°/51.2°
Average high / low
+2.2°
Above normal
5 / 5
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
71.6°
67°
+2.6°
20 October – 29 October
67.4°
63.2°
+2.3°
30 October – 8 November
at normal
59°
—
October records over 66 years
91.4°1 October 2019All-time high
28.6°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Edwardsville (6 mi).
Sun, 1187° / 49°0
87 °
Oldenburg, Sunday, 11 October
Clear. High 87°, low 49°.
Pressure30.00 inHg
Wind2.5 mph S
Humidity52%
Visibility6.2 mi
Dew point55°
Mon, 1290° / 61°0
90 °
Oldenburg, Monday, 12 October
Clear. High 90°, low 61°.
Pressure29.91 inHg
Wind9.1 mph SW
Humidity43%
Visibility6.2 mi
Dew point60°
Tue, 1389° / 72°0
89 °
Oldenburg, Tuesday, 13 October
Clear. High 89°, low 72°.
Pressure29.88 inHg
Wind8.4 mph W
Humidity53%
Visibility6.2 mi
Dew point66°
Wed, 1478° / 69°0.2
78 °
Oldenburg, Wednesday, 14 October
Light rain. High 78°, low 69°.
Pressure30.03 inHg
Wind11.4 mph N
Humidity83%
Visibility—
Dew point69°
Thu, 1567° / 60°1.58
67 °
Oldenburg, Thursday, 15 October
Heavy rain. High 67°, low 60°.
Pressure30.18 inHg
Wind10.6 mph NE
Humidity89%
Visibility—
Dew point61°
Fri, 1666° / 48°0.12
66 °
Oldenburg, Friday, 16 October
Light rain. High 66°, low 48°.
Pressure30.06 inHg
Wind22.2 mph NW
Humidity30%
Visibility—
Dew point29°
Sat, 1745° / 36°0
45 °
Oldenburg, Saturday, 17 October
Overcast. High 45°, low 36°.
Pressure30.39 inHg
Wind18.8 mph NW
Humidity38%
Visibility—
Dew point19°
Sun, 1852° / 31°0
52 °
Oldenburg, Sunday, 18 October
Clear. High 52°, low 31°.
Pressure30.53 inHg
Wind7.5 mph NW
Humidity29%
Visibility—
Dew point17°
Mon, 1963° / 38°0
63 °
Oldenburg, Monday, 19 October
Partly cloudy. High 63°, low 38°.
Pressure30.39 inHg
Wind10.5 mph S
Humidity28%
Visibility—
Dew point23°
Tue, 2067° / 44°0
67 °
Oldenburg, Tuesday, 20 October
Overcast. High 67°, low 44°.
Pressure30.27 inHg
Wind14.4 mph S
Humidity26%
Visibility—
Dew point27°
Wed, 2157° / 52°0.4
57 °
Oldenburg, Wednesday, 21 October
Rain. High 57°, low 52°.
Pressure30.09 inHg
Wind11.2 mph S
Humidity92%
Visibility—
Dew point51°
Thu, 2270° / 47°0
70 °
Oldenburg, Thursday, 22 October
Clear. High 70°, low 47°.
Pressure30.21 inHg
Wind6.4 mph SW
Humidity35%
Visibility—
Dew point36°
Fri, 2370° / 51°0
70 °
Oldenburg, Friday, 23 October
Clear. High 70°, low 51°.
Pressure30.18 inHg
Wind6.4 mph NW
Humidity30%
Visibility—
Dew point33°
Sat, 2472° / 52°0.01
72 °
Oldenburg, Saturday, 24 October
Light rain. High 72°, low 52°.
Pressure30.15 inHg
Wind9.1 mph S
Humidity32%
Visibility—
Dew point35°
Sun, 2568° / 51°0.25
68 °
Oldenburg, Sunday, 25 October
Light rain. High 68°, low 51°.
Pressure29.85 inHg
Wind19.6 mph NW
Humidity81%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2661° / 47°0.15
61 °
Oldenburg, Monday, 26 October
Climate normal for this date — 60-year average.
Average high61°
Average low47°
Average precipitation0.15 in
Chance of precipitation38%
Record high82° (1963)
Record low29° (1962)
Tue, 2762° / 47°0.1
62 °
Oldenburg, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.1 in
Chance of precipitation23%
Record high79° (2023)
Record low33° (2001)
Wed, 2861° / 46°0.05
61 °
Oldenburg, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.05 in
Chance of precipitation22%
Record high78° (1999)
Record low32° (1969)
Thu, 2961° / 46°0.11
61 °
Oldenburg, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high81° (2004)
Record low31° (1980)
Fri, 3063° / 47°0.12
63 °
Oldenburg, Friday, 30 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.12 in
Chance of precipitation30%
Record high79° (1971)
Record low29° (1980)
Sat, 3162° / 47°0.15
62 °
Oldenburg, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.15 in
Chance of precipitation38%
Record high79° (1968)
Record low29° (1993)
Sun, 0161° / 46°0.18
61 °
Oldenburg, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.18 in
Chance of precipitation30%
Record high79° (2016)
Record low27° (1993)
Mon, 0260° / 45°0.08
60 °
Oldenburg, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.08 in
Chance of precipitation30%
Record high79° (2016)
Record low27° (1966)
Tue, 0358° / 44°0.11
58 °
Oldenburg, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation30%
Record high78° (1987)
Record low20° (1991)
Wed, 0457° / 45°0.16
57 °
Oldenburg, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.16 in
Chance of precipitation28%
Record high76° (2022)
Record low20° (1991)
Thu, 0558° / 43°0.16
58 °
Oldenburg, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.16 in
Chance of precipitation30%
Record high76° (1978)
Record low24° (1991)
Fri, 0657° / 42°0.09
57 °
Oldenburg, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.09 in
Chance of precipitation33%
Record high77° (2023)
Record low28° (1982)
Sat, 0757° / 42°0.08
57 °
Oldenburg, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.08 in
Chance of precipitation22%
Record high74° (1980)
Record low17° (1991)
Sun, 0857° / 42°0.04
57 °
Oldenburg, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.04 in
Chance of precipitation17%
Record high80° (2023)
Record low4° (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 Oldenburg, 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 Oldenburg, 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.