Monthly outlook for Richmond Heights, MO: average high 88.3°, average low 70.2°. That is 1.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (105°), the coolest 21 August (60°).
88.3°/70.2°
Average high / low
+1.3°
Above normal
7 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
89.5°
85.9°
+2°
18 August – 27 August
86.2°
86.1°
+0.1°
28 August – 6 September
at normal
83.9°
—
August records over 66 years
102.9°15 August 2007All-time high
49.6°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Clayton (1 mi).
Sun, 0996° / 72°0
96 °
Richmond Heights, Sunday, 9 August
Overcast. High 96°, low 72°.
Pressure29.97 inHg
Wind10.3 mph S
Humidity47%
Visibility6.2 mi
Dew point70°
Mon, 10103° / 78°0.01
103 °
Richmond Heights, Monday, 10 August
Light rain. High 103°, low 78°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity37%
Visibility6.2 mi
Dew point67°
Tue, 11105° / 77°0.07
105 °
Richmond Heights, Tuesday, 11 August
Light rain. High 105°, low 77°.
Pressure29.85 inHg
Wind10.5 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 76°0.07
91 °
Richmond Heights, Wednesday, 12 August
Light rain. High 91°, low 76°.
Pressure29.85 inHg
Wind4.9 mph NW
Humidity52%
Visibility6.2 mi
Dew point68°
Thu, 1382° / 71°0.99
82 °
Richmond Heights, Thursday, 13 August
Rain. High 82°, low 71°.
Pressure29.91 inHg
Wind12.9 mph SE
Humidity67%
Visibility—
Dew point68°
Fri, 1476° / 70°0.31
76 °
Richmond Heights, Friday, 14 August
Rain. High 76°, low 70°.
Pressure30.03 inHg
Wind9.6 mph SE
Humidity81%
Visibility—
Dew point69°
Sat, 1579° / 68°0.17
79 °
Richmond Heights, Saturday, 15 August
Light rain. High 79°, low 68°.
Pressure30.15 inHg
Wind12.6 mph SE
Humidity70%
Visibility—
Dew point66°
Sun, 1685° / 68°0
85 °
Richmond Heights, Sunday, 16 August
Overcast. High 85°, low 68°.
Pressure30.06 inHg
Wind10 mph E
Humidity65%
Visibility—
Dew point69°
Mon, 1787° / 70°0.02
87 °
Richmond Heights, Monday, 17 August
Light rain. High 87°, low 70°.
Pressure30.03 inHg
Wind8.7 mph NE
Humidity67%
Visibility—
Dew point69°
Tue, 1881° / 71°0.04
81 °
Richmond Heights, Tuesday, 18 August
Light rain. High 81°, low 71°.
Pressure30.03 inHg
Wind10.7 mph W
Humidity82%
Visibility—
Dew point73°
Wed, 1990° / 71°0
90 °
Richmond Heights, Wednesday, 19 August
Overcast. High 90°, low 71°.
Pressure29.91 inHg
Wind12.2 mph N
Humidity48%
Visibility—
Dew point63°
Thu, 2079° / 64°0
79 °
Richmond Heights, Thursday, 20 August
Mostly clear. High 79°, low 64°.
Pressure30.03 inHg
Wind9.8 mph NE
Humidity44%
Visibility—
Dew point52°
Fri, 2178° / 60°0.1
78 °
Richmond Heights, Friday, 21 August
Light rain. High 78°, low 60°.
Pressure30.00 inHg
Wind10.7 mph E
Humidity50%
Visibility—
Dew point52°
Sat, 2292° / 64°0.12
92 °
Richmond Heights, Saturday, 22 August
Light rain. High 92°, low 64°.
Pressure29.83 inHg
Wind9.9 mph SE
Humidity52%
Visibility—
Dew point63°
Sun, 2397° / 73°0.02
97 °
Richmond Heights, Sunday, 23 August
Light rain. High 97°, low 73°.
Pressure29.94 inHg
Wind7.7 mph NE
Humidity45%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 68°0.09
86 °
Richmond Heights, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.09 in
Chance of precipitation30%
Record high99° (2023)
Record low57° (2015)
Tue, 2587° / 68°0.07
87 °
Richmond Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high100° (2023)
Record low56° (2015)
Wed, 2687° / 69°0.13
87 °
Richmond Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low69°
Average precipitation0.13 in
Chance of precipitation33%
Record high99° (1983)
Record low57° (2025)
Thu, 2786° / 69°0.13
86 °
Richmond Heights, 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°0.09
86 °
Richmond Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.09 in
Chance of precipitation27%
Record high97° (1990)
Record low55° (1967)
Sat, 2985° / 68°0.07
85 °
Richmond Heights, 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 low50° (1986)
Sun, 3084° / 68°0.13
84 °
Richmond Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (2013)
Record low52° (1986)
Mon, 3184° / 68°0.11
84 °
Richmond Heights, 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° / 67°0.11
84 °
Richmond Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation33%
Record high99° (2011)
Record low52° (1967)
Wed, 0284° / 67°0.12
84 °
Richmond Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation35%
Record high98° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.1
83 °
Richmond Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation25%
Record high96° (2011)
Record low51° (1974)
Fri, 0483° / 66°0.12
83 °
Richmond Heights, 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 °
Richmond Heights, 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°0.04
83 °
Richmond Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation23%
Record high98° (1990)
Record low52° (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 Richmond Heights, 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 Richmond Heights, 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.