Monthly outlook for Glen Echo Park, MO: average high 87.8°, average low 69.9°. That is 1.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (104.7°), the coolest 21 August (59.6°).
87.8°/69.9°
Average high / low
+1.3°
Above normal
7 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
89°
85.5°
+1.9°
18 August – 27 August
85.8°
85.7°
+0.1°
28 August – 6 September
at normal
83.6°
—
August records over 66 years
102.4°15 August 2007All-time high
49.1°29 August 1986All-time low
Sun, 0996° / 72°0
96 °
Glen Echo Park, Sunday, 9 August
Overcast. High 96°, low 72°.
Pressure29.97 inHg
Wind10.7 mph S
Humidity46%
Visibility6.2 mi
Dew point70°
Mon, 10103° / 79°0.02
103 °
Glen Echo Park, Monday, 10 August
Light rain. High 103°, low 79°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity37%
Visibility6.2 mi
Dew point67°
Tue, 11105° / 78°0.05
105 °
Glen Echo Park, Tuesday, 11 August
Light rain. High 105°, low 78°.
Pressure29.85 inHg
Wind10.7 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 76°0.07
91 °
Glen Echo Park, Wednesday, 12 August
Light rain. High 91°, low 76°.
Pressure29.85 inHg
Wind5.6 mph NW
Humidity51%
Visibility6.2 mi
Dew point68°
Thu, 1382° / 70°0.81
82 °
Glen Echo Park, Thursday, 13 August
Rain. High 82°, low 70°.
Pressure29.91 inHg
Wind13.6 mph NE
Humidity65%
Visibility—
Dew point68°
Fri, 1476° / 69°0.41
76 °
Glen Echo Park, Friday, 14 August
Rain. High 76°, low 69°.
Pressure30.03 inHg
Wind8.8 mph E
Humidity81%
Visibility—
Dew point68°
Sat, 1579° / 67°0.18
79 °
Glen Echo Park, Saturday, 15 August
Light rain. High 79°, low 67°.
Pressure30.15 inHg
Wind12.6 mph E
Humidity68%
Visibility—
Dew point65°
Sun, 1683° / 68°0
83 °
Glen Echo Park, Sunday, 16 August
Overcast. High 83°, low 68°.
Pressure30.06 inHg
Wind9.8 mph E
Humidity69%
Visibility—
Dew point69°
Mon, 1786° / 70°0.04
86 °
Glen Echo Park, Monday, 17 August
Light rain. High 86°, low 70°.
Pressure30.03 inHg
Wind8.3 mph NE
Humidity69%
Visibility—
Dew point69°
Tue, 1882° / 71°0.03
82 °
Glen Echo Park, Tuesday, 18 August
Light rain. High 82°, low 71°.
Pressure30.03 inHg
Wind10 mph W
Humidity78%
Visibility—
Dew point72°
Wed, 1988° / 71°0
88 °
Glen Echo Park, Wednesday, 19 August
Overcast. High 88°, low 71°.
Pressure29.91 inHg
Wind12.3 mph N
Humidity46%
Visibility—
Dew point63°
Thu, 2078° / 62°0
78 °
Glen Echo Park, Thursday, 20 August
Mostly clear. High 78°, low 62°.
Pressure30.03 inHg
Wind9.9 mph NE
Humidity46%
Visibility—
Dew point53°
Fri, 2177° / 60°0.08
77 °
Glen Echo Park, Friday, 21 August
Light rain. High 77°, low 60°.
Pressure30.00 inHg
Wind11 mph E
Humidity48%
Visibility—
Dew point51°
Sat, 2291° / 63°0.14
91 °
Glen Echo Park, Saturday, 22 August
Light rain. High 91°, low 63°.
Pressure29.83 inHg
Wind10.2 mph SE
Humidity51%
Visibility—
Dew point63°
Sun, 2398° / 73°0.01
98 °
Glen Echo Park, Sunday, 23 August
Light rain. High 98°, low 73°.
Pressure29.94 inHg
Wind9.2 mph NE
Humidity43%
Visibility—
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 68°0.09
85 °
Glen Echo Park, Monday, 24 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation30%
Record high99° (2023)
Record low57° (2015)
Tue, 2586° / 68°0.07
86 °
Glen Echo Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high98° (2023)
Record low56° (2015)
Wed, 2686° / 69°0.14
86 °
Glen Echo 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 °
Glen Echo 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° / 68°0.08
86 °
Glen Echo Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (1990)
Record low55° (1967)
Sat, 2985° / 68°0.07
85 °
Glen Echo Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high96° (1984)
Record low49° (1986)
Sun, 3084° / 68°0.13
84 °
Glen Echo 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° / 67°0.11
84 °
Glen Echo Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation32%
Record high101° (2013)
Record low56° (1967)
Tue, 0183° / 67°0.11
83 °
Glen Echo Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.11 in
Chance of precipitation32%
Record high98° (2011)
Record low52° (1967)
Wed, 0283° / 67°0.12
83 °
Glen Echo Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation33%
Record high97° (2011)
Record low53° (1974)
Thu, 0383° / 66°0.09
83 °
Glen Echo Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation25%
Record high95° (2011)
Record low50° (1974)
Fri, 0482° / 66°0.12
82 °
Glen Echo Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation28%
Record high96° (1960)
Record low51° (1974)
Sat, 0583° / 65°0.04
83 °
Glen Echo Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation15%
Record high96° (1998)
Record low51° (1974)
Sun, 0683° / 65°0.05
83 °
Glen Echo 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)
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 Glen Echo 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 Glen Echo 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.