Monthly outlook for Birmingham, IL: average high 83.8°, average low 65.6°. That is 0.1° above the climate normal for August. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 11 August (96.4°), the coolest 21 August (52.2°).
83.8°/65.6°
Average high / low
+0.1°
Above normal
4 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.3°
83.6°
+0.9°
18 August – 27 August
81.2°
83.6°
-1.3°
28 August – 6 September
at normal
81.8°
—
August records over 66 years
100.4°15 August 2007All-time high
47.3°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Camden (8 mi).
Sun, 0993° / 70°0
93 °
Birmingham, Sunday, 9 August
Overcast. High 93°, low 70°.
Pressure29.88 inHg
Wind12.9 mph S
Humidity61%
Visibility6.2 mi
Dew point72°
Mon, 1095° / 74°0
95 °
Birmingham, Monday, 10 August
Overcast. High 95°, low 74°.
Pressure29.88 inHg
Wind10.8 mph SW
Humidity56%
Visibility6.2 mi
Dew point71°
Tue, 1196° / 79°0.01
96 °
Birmingham, Tuesday, 11 August
Light rain. High 96°, low 79°.
Pressure29.80 inHg
Wind8.8 mph SW
Humidity62%
Visibility6.2 mi
Dew point69°
Wed, 1285° / 71°0.2
85 °
Birmingham, Wednesday, 12 August
Light rain. High 85°, low 71°.
Pressure29.88 inHg
Wind7.1 mph NW
Humidity76%
Visibility2.8 mi
Dew point75°
Thu, 1383° / 66°0.86
83 °
Birmingham, Thursday, 13 August
Heavy rain. High 83°, low 66°.
Pressure29.88 inHg
Wind15.3 mph NE
Humidity61%
Visibility—
Dew point66°
Fri, 1481° / 62°0
81 °
Birmingham, Friday, 14 August
Overcast. High 81°, low 62°.
Pressure30.06 inHg
Wind12.2 mph E
Humidity63%
Visibility—
Dew point63°
Sat, 1571° / 64°0.17
71 °
Birmingham, Saturday, 15 August
Light rain. High 71°, low 64°.
Pressure30.21 inHg
Wind18.5 mph E
Humidity78%
Visibility—
Dew point61°
Sun, 1678° / 64°0.02
78 °
Birmingham, Sunday, 16 August
Light rain. High 78°, low 64°.
Pressure30.12 inHg
Wind10.7 mph E
Humidity79%
Visibility—
Dew point64°
Mon, 1783° / 66°0.02
83 °
Birmingham, Monday, 17 August
Light rain. High 83°, low 66°.
Pressure30.06 inHg
Wind6 mph E
Humidity68%
Visibility—
Dew point66°
Tue, 1886° / 66°0
86 °
Birmingham, Tuesday, 18 August
Overcast. High 86°, low 66°.
Pressure30.00 inHg
Wind7.5 mph SW
Humidity65%
Visibility—
Dew point68°
Wed, 1979° / 63°0
79 °
Birmingham, Wednesday, 19 August
Overcast. High 79°, low 63°.
Pressure29.94 inHg
Wind14.5 mph N
Humidity69%
Visibility—
Dew point65°
Thu, 2075° / 56°0
75 °
Birmingham, Thursday, 20 August
Overcast. High 75°, low 56°.
Pressure30.06 inHg
Wind17.8 mph NE
Humidity49%
Visibility—
Dew point52°
Fri, 2173° / 52°0
73 °
Birmingham, Friday, 21 August
Overcast. High 73°, low 52°.
Pressure30.03 inHg
Wind11.3 mph SE
Humidity49%
Visibility—
Dew point50°
Sat, 2284° / 61°0.07
84 °
Birmingham, Saturday, 22 August
Light rain. High 84°, low 61°.
Pressure29.85 inHg
Wind13.9 mph S
Humidity73%
Visibility—
Dew point65°
Sun, 2391° / 67°0
91 °
Birmingham, Sunday, 23 August
Clear. High 91°, low 67°.
Pressure29.94 inHg
Wind8.3 mph W
Humidity50%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2484° / 67°0.08
84 °
Birmingham, Monday, 24 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation22%
Record high98° (2023)
Record low55° (1966)
Tue, 2584° / 67°0.12
84 °
Birmingham, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (2003)
Record low55° (1966)
Wed, 2684° / 68°0.15
84 °
Birmingham, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.15 in
Chance of precipitation30%
Record high98° (2003)
Record low51° (2025)
Thu, 2784° / 68°0.05
84 °
Birmingham, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.05 in
Chance of precipitation27%
Record high96° (1983)
Record low55° (2025)
Fri, 2883° / 67°0.13
83 °
Birmingham, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.13 in
Chance of precipitation33%
Record high96° (1984)
Record low51° (1986)
Sat, 2983° / 67°0.08
83 °
Birmingham, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation23%
Record high96° (1984)
Record low47° (1986)
Sun, 3082° / 66°0.09
82 °
Birmingham, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation27%
Record high98° (2013)
Record low54° (2009)
Mon, 3182° / 65°0.1
82 °
Birmingham, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.1 in
Chance of precipitation25%
Record high94° (2013)
Record low53° (1967)
Tue, 0182° / 66°0.15
82 °
Birmingham, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.15 in
Chance of precipitation30%
Record high98° (2011)
Record low48° (1967)
Wed, 0282° / 65°0.09
82 °
Birmingham, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation28%
Record high95° (2011)
Record low51° (2017)
Thu, 0382° / 65°0.09
82 °
Birmingham, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (1960)
Record low48° (1974)
Fri, 0480° / 64°0.1
80 °
Birmingham, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.1 in
Chance of precipitation20%
Record high94° (1960)
Record low44° (1974)
Sat, 0581° / 64°0.04
81 °
Birmingham, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.04 in
Chance of precipitation18%
Record high94° (1960)
Record low48° (1974)
Sun, 0680° / 64°0.08
80 °
Birmingham, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.08 in
Chance of precipitation23%
Record high94° (1960)
Record low49° (1962)
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 Birmingham, 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 Birmingham, 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.