Monthly outlook for Pettys Hill, MO: average high 100°, average low 75.4°. That is 8° above the climate normal for August. Precipitation is expected on 7 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (114.4°), the coolest 15 August (66.6°).
100°/75.4°
Average high / low
+8°
Above normal
7 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
94°
85.8°
+4.6°
19 August – 28 August
110°
85.8°
+13.4°
29 August – 7 September
at normal
83.4°
—
August records over 66 years
103.6°15 August 2007All-time high
52.3°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Winchester (3 mi).
Mon, 10101° / 73°0.21
101 °
Pettys Hill, Monday, 10 August
Rain. High 101°, low 73°.
Pressure29.94 inHg
Wind10.6 mph SW
Humidity36%
Visibility6.2 mi
Dew point66°
Tue, 11103° / 73°0
103 °
Pettys Hill, Tuesday, 11 August
Partly cloudy. High 103°, low 73°.
Pressure29.88 inHg
Wind10.4 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1299° / 79°0.02
99 °
Pettys Hill, Wednesday, 12 August
Light rain. High 99°, low 79°.
Pressure29.83 inHg
Wind8 mph W
Humidity44%
Visibility6.2 mi
Dew point68°
Thu, 1391° / 74°0.08
91 °
Pettys Hill, Thursday, 13 August
Light rain. High 91°, low 74°.
Pressure29.88 inHg
Wind12.7 mph E
Humidity56%
Visibility—
Dew point70°
Fri, 1476° / 67°0.06
76 °
Pettys Hill, Friday, 14 August
Light rain. High 76°, low 67°.
Pressure30.06 inHg
Wind11.4 mph E
Humidity84%
Visibility—
Dew point65°
Sat, 1593° / 67°0.09
93 °
Pettys Hill, Saturday, 15 August
Light rain. High 93°, low 67°.
Pressure30.09 inHg
Wind9.6 mph E
Humidity65%
Visibility—
Dew point68°
Sun, 1693° / 73°0
93 °
Pettys Hill, Sunday, 16 August
Overcast. High 93°, low 73°.
Pressure30.03 inHg
Wind8 mph N
Humidity57%
Visibility—
Dew point70°
Mon, 1792° / 74°0.06
92 °
Pettys Hill, Monday, 17 August
Light rain. High 92°, low 74°.
Pressure30.03 inHg
Wind7.9 mph NE
Humidity52%
Visibility—
Dew point67°
Tue, 1897° / 70°0.01
97 °
Pettys Hill, Tuesday, 18 August
Light rain. High 97°, low 70°.
Pressure29.94 inHg
Wind10.8 mph E
Humidity49%
Visibility—
Dew point67°
Wed, 19112° / 78°0
112 °
Pettys Hill, Wednesday, 19 August
Clear. High 112°, low 78°.
Pressure29.85 inHg
Wind13.5 mph S
Humidity23%
Visibility—
Dew point57°
Thu, 20114° / 84°0
114 °
Pettys Hill, Thursday, 20 August
Clear. High 114°, low 84°.
Pressure29.80 inHg
Wind12 mph W
Humidity16%
Visibility—
Dew point52°
Fri, 21110° / 83°0
110 °
Pettys Hill, Friday, 21 August
Clear. High 110°, low 83°.
Pressure29.83 inHg
Wind9.4 mph W
Humidity20%
Visibility—
Dew point54°
Sat, 22113° / 81°0.02
113 °
Pettys Hill, Saturday, 22 August
Light rain. High 113°, low 81°.
Pressure29.83 inHg
Wind6.7 mph SW
Humidity22%
Visibility—
Dew point57°
Sun, 23109° / 80°0.04
109 °
Pettys Hill, Sunday, 23 August
Light rain. High 109°, low 80°.
Pressure29.85 inHg
Wind7.9 mph SW
Humidity26%
Visibility—
Dew point60°
Mon, 24102° / 77°0.04
102 °
Pettys Hill, Monday, 24 August
Light rain. High 102°, low 77°.
Pressure29.97 inHg
Wind7.6 mph E
Humidity35%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 69°0.06
87 °
Pettys Hill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low69°
Average precipitation0.06 in
Chance of precipitation20%
Record high101° (2023)
Record low58° (2015)
Wed, 2686° / 69°0.15
86 °
Pettys Hill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.15 in
Chance of precipitation32%
Record high99° (1983)
Record low57° (2025)
Thu, 2786° / 69°0.1
86 °
Pettys Hill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.1 in
Chance of precipitation30%
Record high98° (1983)
Record low57° (2025)
Fri, 2886° / 69°0.08
86 °
Pettys Hill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation28%
Record high97° (2000)
Record low55° (1967)
Sat, 2985° / 68°0.08
85 °
Pettys Hill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (1984)
Record low52° (1986)
Sun, 3084° / 68°0.14
84 °
Pettys Hill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.14 in
Chance of precipitation30%
Record high98° (2013)
Record low54° (1986)
Mon, 3184° / 68°0.11
84 °
Pettys Hill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high102° (2013)
Record low56° (1967)
Tue, 0184° / 68°0.1
84 °
Pettys Hill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.1 in
Chance of precipitation33%
Record high99° (2011)
Record low53° (1967)
Wed, 0283° / 67°0.12
83 °
Pettys Hill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation37%
Record high98° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.1
83 °
Pettys Hill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation30%
Record high96° (2011)
Record low50° (1974)
Fri, 0483° / 66°0.11
83 °
Pettys Hill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation28%
Record high97° (1960)
Record low51° (1974)
Sat, 0583° / 66°0.04
83 °
Pettys Hill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.04 in
Chance of precipitation20%
Record high97° (1998)
Record low53° (1974)
Sun, 0683° / 66°0.04
83 °
Pettys Hill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.04 in
Chance of precipitation23%
Record high99° (1990)
Record low53° (2017)
Mon, 0783° / 65°0.07
83 °
Pettys Hill, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation27%
Record high96° (1960)
Record low51° (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 Pettys Hill, 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 Pettys Hill, 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.