Monthly outlook for Owen Center, IL: average high 82.3°, average low 64.9°. That is 1.4° above the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 20 August (94.6°), the coolest 14 August (56.7°).
82.3°/64.9°
Average high / low
+1.4°
Above normal
5 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.8°
79.8°
-0.5°
19 August – 28 August
88.1°
79.8°
+4.6°
29 August – 7 September
at normal
78°
—
August records over 66 years
98.8°23 August 2023All-time high
44.1°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Rockford (8 mi).
Mon, 1087° / 70°0.28
87 °
Owen Center, Monday, 10 August
Rain. High 87°, low 70°.
Pressure29.85 inHg
Wind9.6 mph E
Humidity79%
Visibility6.2 mi
Dew point73°
Tue, 1183° / 67°0.08
83 °
Owen Center, Tuesday, 11 August
Light rain. High 83°, low 67°.
Pressure29.80 inHg
Wind9.3 mph S
Humidity86%
Visibility6.2 mi
Dew point72°
Wed, 1282° / 67°0.01
82 °
Owen Center, Wednesday, 12 August
Light rain. High 82°, low 67°.
Pressure29.85 inHg
Wind6.7 mph NW
Humidity71%
Visibility6.2 mi
Dew point70°
Thu, 1374° / 61°0
74 °
Owen Center, Thursday, 13 August
Overcast. High 74°, low 61°.
Pressure30.03 inHg
Wind8.5 mph E
Humidity62%
Visibility—
Dew point58°
Fri, 1475° / 57°0
75 °
Owen Center, Friday, 14 August
Partly cloudy. High 75°, low 57°.
Pressure30.18 inHg
Wind9.4 mph E
Humidity55%
Visibility—
Dew point54°
Sat, 1575° / 57°0
75 °
Owen Center, Saturday, 15 August
Overcast. High 75°, low 57°.
Pressure30.24 inHg
Wind8.9 mph SE
Humidity58%
Visibility—
Dew point56°
Sun, 1674° / 63°0.02
74 °
Owen Center, Sunday, 16 August
Light rain. High 74°, low 63°.
Pressure30.09 inHg
Wind6 mph SE
Humidity82%
Visibility—
Dew point62°
Mon, 1780° / 64°0
80 °
Owen Center, Monday, 17 August
Overcast. High 80°, low 64°.
Pressure30.06 inHg
Wind6.9 mph E
Humidity62%
Visibility—
Dew point63°
Tue, 1877° / 60°0.03
77 °
Owen Center, Tuesday, 18 August
Light rain. High 77°, low 60°.
Pressure30.03 inHg
Wind7.8 mph S
Humidity80%
Visibility—
Dew point65°
Wed, 1987° / 67°0.14
87 °
Owen Center, Wednesday, 19 August
Light rain. High 87°, low 67°.
Pressure29.85 inHg
Wind15.7 mph S
Humidity72%
Visibility—
Dew point70°
Thu, 2095° / 76°0
95 °
Owen Center, Thursday, 20 August
Overcast. High 95°, low 76°.
Pressure29.77 inHg
Wind8.4 mph S
Humidity57%
Visibility—
Dew point72°
Fri, 2187° / 70°0
87 °
Owen Center, Friday, 21 August
Mostly clear. High 87°, low 70°.
Pressure29.94 inHg
Wind11.9 mph NE
Humidity52%
Visibility—
Dew point64°
Sat, 2291° / 65°0
91 °
Owen Center, Saturday, 22 August
Light rain. High 91°, low 65°.
Pressure29.85 inHg
Wind11.5 mph S
Humidity60%
Visibility—
Dew point69°
Sun, 2388° / 67°0.02
88 °
Owen Center, Sunday, 23 August
Light rain. High 88°, low 67°.
Pressure29.83 inHg
Wind13.3 mph NE
Humidity53%
Visibility—
Dew point66°
Mon, 2482° / 65°0.06
82 °
Owen Center, Monday, 24 August
Light rain. High 82°, low 65°.
Pressure30.06 inHg
Wind12.8 mph E
Humidity79%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 64°0.07
80 °
Owen Center, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (1991)
Record low51° (2017)
Wed, 2680° / 64°0.16
80 °
Owen Center, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.16 in
Chance of precipitation30%
Record high94° (2003)
Record low50° (1964)
Thu, 2780° / 65°0.11
80 °
Owen Center, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation27%
Record high95° (2024)
Record low51° (1968)
Fri, 2880° / 64°0.15
80 °
Owen Center, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation35%
Record high92° (1984)
Record low46° (1986)
Sat, 2980° / 63°0.13
80 °
Owen Center, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation22%
Record high93° (1984)
Record low44° (1965)
Sun, 3078° / 63°0.06
78 °
Owen Center, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.06 in
Chance of precipitation30%
Record high93° (2013)
Record low53° (2009)
Mon, 3178° / 62°0.07
78 °
Owen Center, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2012)
Record low46° (2009)
Tue, 0178° / 62°0.09
78 °
Owen Center, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2011)
Record low46° (1967)
Wed, 0279° / 62°0.05
79 °
Owen Center, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.05 in
Chance of precipitation25%
Record high92° (2008)
Record low47° (1967)
Thu, 0378° / 62°0.11
78 °
Owen Center, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (2023)
Record low47° (1974)
Fri, 0477° / 61°0.09
77 °
Owen Center, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation32%
Record high93° (2023)
Record low45° (1974)
Sat, 0577° / 60°0.06
77 °
Owen Center, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.06 in
Chance of precipitation25%
Record high89° (2023)
Record low48° (1974)
Sun, 0677° / 61°0.1
77 °
Owen Center, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.1 in
Chance of precipitation32%
Record high90° (1990)
Record low46° (1988)
Mon, 0777° / 60°0.12
77 °
Owen Center, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.12 in
Chance of precipitation28%
Record high90° (1960)
Record low45° (2025)
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 Owen Center, 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 Owen Center, 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.