Monthly outlook for Calverton Park, MO: average high 97.8°, average low 75.6°. That is 6.7° above the climate normal for August. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (114.1°), the coolest 15 August (66°).
97.8°/75.6°
Average high / low
+6.7°
Above normal
6 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
91.4°
85.8°
+3.1°
19 August – 28 August
108.4°
85.9°
+12.5°
29 August – 7 September
at normal
83.6°
—
August records over 66 years
102.7°15 August 2007All-time high
49.5°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Country Club Hills (4 mi).
Mon, 10101° / 71°0.69
101 °
Calverton Park, Monday, 10 August
Heavy rain. High 101°, low 71°.
Pressure29.91 inHg
Wind11.2 mph SW
Humidity35%
Visibility6.2 mi
Dew point65°
Tue, 11102° / 72°0.09
102 °
Calverton Park, Tuesday, 11 August
Rain. High 102°, low 72°.
Pressure29.88 inHg
Wind10.7 mph SW
Humidity40%
Visibility6.2 mi
Dew point67°
Wed, 1294° / 79°0.04
94 °
Calverton Park, Wednesday, 12 August
Light rain. High 94°, low 79°.
Pressure29.83 inHg
Wind8.4 mph NW
Humidity48%
Visibility6.2 mi
Dew point69°
Thu, 1386° / 73°0.17
86 °
Calverton Park, Thursday, 13 August
Light rain. High 86°, low 73°.
Pressure29.91 inHg
Wind13.2 mph NE
Humidity62%
Visibility—
Dew point70°
Fri, 1473° / 66°0.12
73 °
Calverton Park, Friday, 14 August
Light rain. High 73°, low 66°.
Pressure30.06 inHg
Wind12.6 mph E
Humidity80%
Visibility—
Dew point64°
Sat, 1589° / 66°0.11
89 °
Calverton Park, Saturday, 15 August
Light rain. High 89°, low 66°.
Pressure30.12 inHg
Wind9.8 mph E
Humidity77%
Visibility—
Dew point68°
Sun, 1690° / 72°0
90 °
Calverton Park, Sunday, 16 August
Partly cloudy. High 90°, low 72°.
Pressure30.03 inHg
Wind8.5 mph E
Humidity60%
Visibility—
Dew point71°
Mon, 1789° / 73°0.03
89 °
Calverton Park, Monday, 17 August
Light rain. High 89°, low 73°.
Pressure30.06 inHg
Wind7.6 mph NE
Humidity53%
Visibility—
Dew point66°
Tue, 1895° / 71°0.02
95 °
Calverton Park, Tuesday, 18 August
Light rain. High 95°, low 71°.
Pressure29.94 inHg
Wind10.9 mph E
Humidity50%
Visibility—
Dew point66°
Wed, 19111° / 80°0
111 °
Calverton Park, Wednesday, 19 August
Partly cloudy. High 111°, low 80°.
Pressure29.85 inHg
Wind10.6 mph SE
Humidity25%
Visibility—
Dew point58°
Thu, 20114° / 86°0
114 °
Calverton Park, Thursday, 20 August
Clear. High 114°, low 86°.
Pressure29.80 inHg
Wind13 mph W
Humidity17%
Visibility—
Dew point53°
Fri, 21103° / 85°0
103 °
Calverton Park, Friday, 21 August
Clear. High 103°, low 85°.
Pressure29.85 inHg
Wind8.7 mph NE
Humidity25%
Visibility—
Dew point58°
Sat, 22113° / 84°0.01
113 °
Calverton Park, Saturday, 22 August
Light rain. High 113°, low 84°.
Pressure29.83 inHg
Wind8.7 mph SW
Humidity22%
Visibility—
Dew point57°
Sun, 23109° / 80°0.02
109 °
Calverton Park, Sunday, 23 August
Light rain. High 109°, low 80°.
Pressure29.85 inHg
Wind11.5 mph N
Humidity26%
Visibility—
Dew point60°
Mon, 24101° / 79°0.04
101 °
Calverton Park, Monday, 24 August
Light rain. High 101°, low 79°.
Pressure29.97 inHg
Wind9.1 mph SW
Humidity41%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 69°0.07
87 °
Calverton Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low69°
Average precipitation0.07 in
Chance of precipitation25%
Record high98° (2023)
Record low56° (2015)
Wed, 2686° / 69°0.14
86 °
Calverton Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation33%
Record high98° (1983)
Record low57° (2015)
Thu, 2786° / 69°0.13
86 °
Calverton Park, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (1983)
Record low56° (2015)
Fri, 2886° / 69°0.08
86 °
Calverton Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (1990)
Record low56° (1967)
Sat, 2985° / 68°0.07
85 °
Calverton Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1984)
Record low49° (1986)
Sun, 3084° / 68°0.13
84 °
Calverton Park, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high97° (2013)
Record low52° (1986)
Mon, 3184° / 68°0.11
84 °
Calverton Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high101° (2013)
Record low56° (1967)
Tue, 0184° / 68°0.11
84 °
Calverton Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high99° (2011)
Record low52° (1967)
Wed, 0284° / 67°0.12
84 °
Calverton Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation33%
Record high98° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.09
83 °
Calverton Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high96° (2011)
Record low51° (1974)
Fri, 0483° / 66°0.12
83 °
Calverton Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation28%
Record high97° (1960)
Record low51° (1974)
Sat, 0583° / 65°0.04
83 °
Calverton Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation15%
Record high97° (1998)
Record low51° (1974)
Sun, 0683° / 65°0.05
83 °
Calverton Park, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.05 in
Chance of precipitation22%
Record high98° (1990)
Record low52° (1988)
Mon, 0783° / 65°0.11
83 °
Calverton Park, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.11 in
Chance of precipitation23%
Record high96° (1960)
Record low49° (1988)
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 Calverton Park, MO 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 Calverton Park, MO 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.