10-day forecast for Cornwall, MO: 58° to 102°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.
102°
Best day: Tuesday, August 11
83° · 0.64 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0994° / 69°0
Morning75°feels 76°
Afternoon93°feels 95°
Evening83°feels 86°
Overnight72°feels 74°
94 °
Cornwall, Sunday, 9 August
Mostly clear. High 94°, low 69°.
Pressure30.00 inHg
Wind8.7 mph S
Humidity48%
Visibility6.2 mi
Dew point67°
Mon, 1099° / 71°0
Morning77°feels 78°
Afternoon98°feels 100°
Evening85°feels 90°
Overnight74°feels 75°
99 °
Cornwall, Monday, 10 August
Clear. High 99°, low 71°.
Pressure30.00 inHg
Wind10.3 mph SW
Humidity41%
Visibility6.2 mi
Dew point67°
Tue, 11102° / 73°0
Morning78°feels 79°
Afternoon100°feels 103°
Evening81°feels 83°
Overnight77°feels 78°
102 °
Cornwall, Tuesday, 11 August
Clear. High 102°, low 73°.
Pressure29.94 inHg
Wind10.8 mph SW
Humidity37%
Visibility6.2 mi
Dew point66°
Wed, 1293° / 74°0.09
Morning73°feels 74°
Afternoon94°feels 99°
Evening82°feels 85°
Overnight75°feels 76°
93 °
Cornwall, Wednesday, 12 August
Light rain. High 93°, low 74°.
Pressure29.88 inHg
Wind8.3 mph W
Humidity67%
Visibility6.2 mi
Dew point71°
Thu, 1383° / 72°0.64
Morning73°feels 74°
Afternoon74°feels 76°
Evening75°feels 77°
Overnight72°feels 73°
83 °
Cornwall, Thursday, 13 August
Heavy rain. High 83°, low 72°.
Pressure29.88 inHg
Wind7.8 mph NE
Humidity92%
Visibility—
Dew point71°
Fri, 1481° / 67°0.06
Morning73°feels 74°
Afternoon80°feels 81°
Evening73°feels 73°
Overnight67°feels 67°
81 °
Cornwall, Friday, 14 August
Light rain. High 81°, low 67°.
Pressure30.09 inHg
Wind8.5 mph NE
Humidity55%
Visibility—
Dew point62°
Sat, 1583° / 58°0
Morning65°feels 64°
Afternoon80°feels 80°
Evening74°feels 74°
Overnight66°feels 65°
83 °
Cornwall, Saturday, 15 August
Overcast. High 83°, low 58°.
Pressure30.24 inHg
Wind7.1 mph NE
Humidity42%
Visibility—
Dew point53°
Sun, 1684° / 63°0.18
Morning65°feels 65°
Afternoon72°feels 73°
Evening77°feels 78°
Overnight71°feels 73°
84 °
Cornwall, Sunday, 16 August
Rain. High 84°, low 63°.
Pressure30.21 inHg
Wind6.8 mph S
Humidity81%
Visibility—
Dew point64°
Mon, 1798° / 71°0.16
Morning77°feels 80°
Afternoon92°feels 97°
Evening86°feels 91°
Overnight79°feels 82°
98 °
Cornwall, Monday, 17 August
Rain. High 98°, low 71°.
Pressure29.97 inHg
Wind13.2 mph S
Humidity46%
Visibility—
Dew point66°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Cornwall, MO around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.