Monthly outlook for Winston, MO: average high 95.1°, average low 72.5°. That is 5.9° above the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 20 August (116.2°), the coolest 14 August (64.1°).
95.1°/72.5°
Average high / low
+5.9°
Above normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.9°
84.6°
+1.9°
19 August – 28 August
107.1°
84.6°
+12.5°
29 August – 7 September
at normal
82.1°
—
August records over 66 years
102.6°29 August 1984All-time high
49.3°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Osborn (14 mi).
Mon, 1091° / 74°0
91 °
Winston, Monday, 10 August
Overcast. High 91°, low 74°.
Pressure29.85 inHg
Wind10.7 mph SW
Humidity50%
Visibility6.2 mi
Dew point68°
Tue, 1199° / 76°0.01
99 °
Winston, Tuesday, 11 August
Light rain. High 99°, low 76°.
Pressure29.77 inHg
Wind16.2 mph SW
Humidity46%
Visibility6.2 mi
Dew point68°
Wed, 1290° / 70°0.03
90 °
Winston, Wednesday, 12 August
Light rain. High 90°, low 70°.
Pressure29.80 inHg
Wind5 mph SE
Humidity50%
Visibility6.2 mi
Dew point68°
Thu, 1381° / 67°0.23
81 °
Winston, Thursday, 13 August
Rain. High 81°, low 67°.
Pressure29.85 inHg
Wind20.8 mph E
Humidity68%
Visibility—
Dew point68°
Fri, 1473° / 64°0.13
73 °
Winston, Friday, 14 August
Light rain. High 73°, low 64°.
Pressure30.03 inHg
Wind20.4 mph E
Humidity87%
Visibility—
Dew point66°
Sat, 1582° / 65°0.04
82 °
Winston, Saturday, 15 August
Light rain. High 82°, low 65°.
Pressure30.09 inHg
Wind12.1 mph E
Humidity82%
Visibility—
Dew point67°
Sun, 1687° / 68°0.03
87 °
Winston, Sunday, 16 August
Light rain. High 87°, low 68°.
Pressure30.09 inHg
Wind9.8 mph NE
Humidity61%
Visibility—
Dew point67°
Mon, 1780° / 67°0.08
80 °
Winston, Monday, 17 August
Light rain. High 80°, low 67°.
Pressure30.09 inHg
Wind7.3 mph E
Humidity84%
Visibility—
Dew point69°
Tue, 1899° / 69°0
99 °
Winston, Tuesday, 18 August
Overcast. High 99°, low 69°.
Pressure29.85 inHg
Wind12.2 mph SE
Humidity41%
Visibility—
Dew point64°
Wed, 19111° / 83°0
111 °
Winston, Wednesday, 19 August
Mostly clear. High 111°, low 83°.
Pressure29.80 inHg
Wind18.5 mph S
Humidity19%
Visibility—
Dew point53°
Thu, 20116° / 85°0
116 °
Winston, Thursday, 20 August
Clear. High 116°, low 85°.
Pressure29.74 inHg
Wind17.2 mph SW
Humidity13%
Visibility—
Dew point47°
Fri, 21103° / 74°0
103 °
Winston, Friday, 21 August
Partly cloudy. High 103°, low 74°.
Pressure29.85 inHg
Wind13.2 mph E
Humidity38%
Visibility—
Dew point64°
Sat, 22112° / 81°0.01
112 °
Winston, Saturday, 22 August
Light rain. High 112°, low 81°.
Pressure29.77 inHg
Wind19.1 mph SW
Humidity16%
Visibility—
Dew point49°
Sun, 23106° / 71°0.06
106 °
Winston, Sunday, 23 August
Light rain. High 106°, low 71°.
Pressure29.80 inHg
Wind37.3 mph S
Humidity28%
Visibility—
Dew point60°
Mon, 2494° / 71°0.43
94 °
Winston, Monday, 24 August
Rain. High 94°, low 71°.
Pressure29.94 inHg
Wind11.9 mph S
Humidity50%
Visibility—
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 68°0.17
85 °
Winston, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.17 in
Chance of precipitation23%
Record high100° (2003)
Record low55° (2025)
Wed, 2685° / 68°0.21
85 °
Winston, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.21 in
Chance of precipitation32%
Record high99° (2003)
Record low54° (2025)
Thu, 2785° / 68°0.09
85 °
Winston, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation23%
Record high97° (1983)
Record low55° (1967)
Fri, 2884° / 67°0.16
84 °
Winston, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.16 in
Chance of precipitation35%
Record high100° (1984)
Record low49° (1986)
Sat, 2984° / 67°0.1
84 °
Winston, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.1 in
Chance of precipitation30%
Record high103° (1984)
Record low54° (1974)
Sun, 3083° / 67°0.12
83 °
Winston, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation33%
Record high98° (2013)
Record low53° (2009)
Mon, 3183° / 66°0.18
83 °
Winston, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.18 in
Chance of precipitation33%
Record high97° (2000)
Record low53° (1967)
Tue, 0182° / 66°0.16
82 °
Winston, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.16 in
Chance of precipitation32%
Record high98° (2011)
Record low51° (1967)
Wed, 0282° / 66°0.1
82 °
Winston, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.1 in
Chance of precipitation28%
Record high96° (2000)
Record low51° (1974)
Thu, 0382° / 65°0.08
82 °
Winston, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (2000)
Record low46° (1974)
Fri, 0482° / 65°0.11
82 °
Winston, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation25%
Record high93° (1983)
Record low44° (1974)
Sat, 0582° / 64°0.12
82 °
Winston, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.12 in
Chance of precipitation23%
Record high94° (2023)
Record low46° (1974)
Sun, 0681° / 64°0.11
81 °
Winston, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation22%
Record high96° (1990)
Record low50° (1988)
Mon, 0781° / 64°0.11
81 °
Winston, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation25%
Record high96° (2013)
Record low49° (2025)
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 Winston, 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 Winston, 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.