Monthly outlook for Hazelwood, MO: average high 88.4°, average low 70.7°. That is 1.7° above the climate normal for August. Precipitation is expected on 8 days (about 1.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (105.2°), the coolest 21 August (60°).
88.4°/70.7°
Average high / low
+1.7°
Above normal
8 / 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
89.7°
85.2°
+2.5°
18 August – 27 August
86.1°
85.4°
+0.4°
28 August – 6 September
at normal
83.3°
—
August records over 66 years
102°15 August 2007All-time high
49.5°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Breckenridge Hills (5 mi).
Sun, 0996° / 73°0
96 °
Hazelwood, Sunday, 9 August
Partly cloudy. High 96°, low 73°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity46%
Visibility6.2 mi
Dew point69°
Mon, 10104° / 80°0.02
104 °
Hazelwood, Monday, 10 August
Light rain. High 104°, low 80°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity38%
Visibility6.2 mi
Dew point67°
Tue, 11105° / 80°0.03
105 °
Hazelwood, Tuesday, 11 August
Light rain. High 105°, low 80°.
Pressure29.85 inHg
Wind11.3 mph SW
Humidity35%
Visibility6.2 mi
Dew point66°
Wed, 1292° / 79°0.1
92 °
Hazelwood, Wednesday, 12 August
Light rain. High 92°, low 79°.
Pressure29.85 inHg
Wind6.6 mph NW
Humidity54%
Visibility6.2 mi
Dew point69°
Thu, 1385° / 70°0.85
85 °
Hazelwood, Thursday, 13 August
Rain. High 85°, low 70°.
Pressure29.91 inHg
Wind16.1 mph NE
Humidity61%
Visibility—
Dew point68°
Fri, 1477° / 69°0.43
77 °
Hazelwood, Friday, 14 August
Rain. High 77°, low 69°.
Pressure30.03 inHg
Wind9 mph E
Humidity80%
Visibility—
Dew point69°
Sat, 1581° / 68°0.2
81 °
Hazelwood, Saturday, 15 August
Light rain. High 81°, low 68°.
Pressure30.15 inHg
Wind13.3 mph SE
Humidity65%
Visibility—
Dew point65°
Sun, 1682° / 69°0
82 °
Hazelwood, Sunday, 16 August
Overcast. High 82°, low 69°.
Pressure30.06 inHg
Wind10.1 mph E
Humidity71%
Visibility—
Dew point70°
Mon, 1786° / 70°0.05
86 °
Hazelwood, Monday, 17 August
Light rain. High 86°, low 70°.
Pressure30.03 inHg
Wind8.5 mph NE
Humidity70%
Visibility—
Dew point69°
Tue, 1884° / 72°0.04
84 °
Hazelwood, Tuesday, 18 August
Light rain. High 84°, low 72°.
Pressure30.00 inHg
Wind9.6 mph SW
Humidity82%
Visibility—
Dew point73°
Wed, 1989° / 72°0
89 °
Hazelwood, Wednesday, 19 August
Overcast. High 89°, low 72°.
Pressure29.91 inHg
Wind12.6 mph N
Humidity47%
Visibility—
Dew point64°
Thu, 2078° / 62°0
78 °
Hazelwood, Thursday, 20 August
Partly cloudy. High 78°, low 62°.
Pressure30.03 inHg
Wind10.6 mph NE
Humidity48%
Visibility—
Dew point54°
Fri, 2177° / 60°0.07
77 °
Hazelwood, Friday, 21 August
Light rain. High 77°, low 60°.
Pressure30.00 inHg
Wind11.4 mph E
Humidity47%
Visibility—
Dew point51°
Sat, 2291° / 64°0.16
91 °
Hazelwood, Saturday, 22 August
Light rain. High 91°, low 64°.
Pressure29.83 inHg
Wind10.4 mph SE
Humidity50%
Visibility—
Dew point63°
Sun, 2398° / 74°0
98 °
Hazelwood, Sunday, 23 August
Clear. High 98°, low 74°.
Pressure29.94 inHg
Wind9.6 mph NE
Humidity43%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 68°0.09
85 °
Hazelwood, Monday, 24 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation30%
Record high98° (2023)
Record low58° (2015)
Tue, 2586° / 68°0.07
86 °
Hazelwood, 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 low57° (2015)
Wed, 2686° / 69°0.14
86 °
Hazelwood, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation32%
Record high98° (1983)
Record low57° (2015)
Thu, 2785° / 69°0.13
85 °
Hazelwood, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high97° (1983)
Record low56° (2015)
Fri, 2885° / 68°0.09
85 °
Hazelwood, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (2000)
Record low55° (1967)
Sat, 2984° / 68°0.07
84 °
Hazelwood, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.07 in
Chance of precipitation28%
Record high96° (1984)
Record low49° (1986)
Sun, 3084° / 68°0.14
84 °
Hazelwood, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.14 in
Chance of precipitation30%
Record high97° (2013)
Record low51° (1986)
Mon, 3183° / 68°0.12
83 °
Hazelwood, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation30%
Record high100° (2013)
Record low56° (1967)
Tue, 0183° / 67°0.11
83 °
Hazelwood, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.11 in
Chance of precipitation33%
Record high98° (2011)
Record low52° (1967)
Wed, 0283° / 67°0.12
83 °
Hazelwood, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation35%
Record high97° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.09
83 °
Hazelwood, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high95° (2011)
Record low50° (1974)
Fri, 0482° / 66°0.11
82 °
Hazelwood, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1960)
Record low51° (1974)
Sat, 0582° / 65°0.04
82 °
Hazelwood, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.04 in
Chance of precipitation17%
Record high96° (1998)
Record low52° (1974)
Sun, 0682° / 65°0.04
82 °
Hazelwood, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.04 in
Chance of precipitation22%
Record high97° (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 Hazelwood, 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 Hazelwood, 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.