Monthly outlook for Lewisville, NC: average high 92.5°, average low 69.8°. That is 3.8° above the climate normal for August. Precipitation is expected on 7 days (about 1.4 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 22 August (103.9°), the coolest 15 August (62.9°).
92.5°/69.8°
Average high / low
+3.8°
Above normal
7 / 7
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
89.6°
85.8°
+2.1°
19 August – 28 August
97.3°
85.4°
+6.7°
29 August – 7 September
at normal
83.8°
—
August records over 66 years
104.2°9 August 2007All-time high
49.5°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Winston-Salem (9 mi).
Mon, 1092° / 73°0.11
92 °
Lewisville, Monday, 10 August
Rain. High 92°, low 73°.
Pressure30.09 inHg
Wind4.4 mph NW
Humidity49%
Visibility6.2 mi
Dew point66°
Tue, 1196° / 72°0.07
96 °
Lewisville, Tuesday, 11 August
Rain. High 96°, low 72°.
Pressure30.00 inHg
Wind6.7 mph W
Humidity57%
Visibility6.2 mi
Dew point69°
Wed, 1298° / 68°0.08
98 °
Lewisville, Wednesday, 12 August
Light rain. High 98°, low 68°.
Pressure29.88 inHg
Wind8.5 mph W
Humidity45%
Visibility6.2 mi
Dew point67°
Thu, 1390° / 69°0.09
90 °
Lewisville, Thursday, 13 August
Light rain. High 90°, low 69°.
Pressure29.91 inHg
Wind7.4 mph N
Humidity47%
Visibility—
Dew point64°
Fri, 1489° / 64°0.72
89 °
Lewisville, Friday, 14 August
Heavy rain. High 89°, low 64°.
Pressure30.00 inHg
Wind10.5 mph NE
Humidity45%
Visibility—
Dew point63°
Sat, 1583° / 63°0
83 °
Lewisville, Saturday, 15 August
Overcast. High 83°, low 63°.
Pressure30.18 inHg
Wind4.7 mph NE
Humidity52%
Visibility—
Dew point61°
Sun, 1682° / 67°0
82 °
Lewisville, Sunday, 16 August
Light rain. High 82°, low 67°.
Pressure30.12 inHg
Wind4.9 mph NE
Humidity57%
Visibility—
Dew point62°
Mon, 1788° / 70°0.13
88 °
Lewisville, Monday, 17 August
Light rain. High 88°, low 70°.
Pressure29.94 inHg
Wind6.5 mph N
Humidity61%
Visibility—
Dew point69°
Tue, 1886° / 67°0
86 °
Lewisville, Tuesday, 18 August
Partly cloudy. High 86°, low 67°.
Pressure29.97 inHg
Wind7.7 mph E
Humidity46%
Visibility—
Dew point60°
Wed, 1991° / 66°0
91 °
Lewisville, Wednesday, 19 August
Partly cloudy. High 91°, low 66°.
Pressure30.03 inHg
Wind4.2 mph NE
Humidity38%
Visibility—
Dew point59°
Thu, 2094° / 69°0.02
94 °
Lewisville, Thursday, 20 August
Light rain. High 94°, low 69°.
Pressure30.00 inHg
Wind5 mph S
Humidity35%
Visibility—
Dew point58°
Fri, 2194° / 72°0.01
94 °
Lewisville, Friday, 21 August
Light rain. High 94°, low 72°.
Pressure29.94 inHg
Wind6.3 mph SW
Humidity40%
Visibility—
Dew point64°
Sat, 22104° / 76°0.12
104 °
Lewisville, Saturday, 22 August
Light rain. High 104°, low 76°.
Pressure29.85 inHg
Wind9.4 mph NW
Humidity29%
Visibility—
Dew point62°
Sun, 23100° / 75°0
100 °
Lewisville, Sunday, 23 August
Overcast. High 100°, low 75°.
Pressure29.94 inHg
Wind4.8 mph S
Humidity38%
Visibility—
Dew point65°
Mon, 24101° / 77°0
101 °
Lewisville, Monday, 24 August
Clear. High 101°, low 77°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity34%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 67°0.07
85 °
Lewisville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.07 in
Chance of precipitation28%
Record high97° (1968)
Record low58° (1971)
Wed, 2685° / 67°0.09
85 °
Lewisville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.09 in
Chance of precipitation33%
Record high97° (2016)
Record low57° (2013)
Thu, 2786° / 68°0.16
86 °
Lewisville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.16 in
Chance of precipitation40%
Record high96° (1987)
Record low57° (2025)
Fri, 2886° / 68°0.08
86 °
Lewisville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.08 in
Chance of precipitation35%
Record high98° (1987)
Record low55° (1969)
Sat, 2986° / 67°0.08
86 °
Lewisville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low67°
Average precipitation0.08 in
Chance of precipitation30%
Record high97° (1998)
Record low52° (1986)
Sun, 3085° / 67°0.07
85 °
Lewisville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.07 in
Chance of precipitation28%
Record high95° (2021)
Record low49° (1986)
Mon, 3184° / 67°0.13
84 °
Lewisville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation40%
Record high96° (2010)
Record low54° (1976)
Tue, 0183° / 66°0.16
83 °
Lewisville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.16 in
Chance of precipitation40%
Record high96° (2012)
Record low56° (1984)
Wed, 0284° / 66°0.1
84 °
Lewisville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.1 in
Chance of precipitation35%
Record high95° (2011)
Record low51° (1967)
Thu, 0384° / 65°0.13
84 °
Lewisville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.13 in
Chance of precipitation38%
Record high95° (2010)
Record low50° (1967)
Fri, 0483° / 66°0.14
83 °
Lewisville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.14 in
Chance of precipitation43%
Record high95° (2007)
Record low53° (1967)
Sat, 0582° / 65°0.22
82 °
Lewisville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.22 in
Chance of precipitation37%
Record high96° (2007)
Record low53° (1997)
Sun, 0683° / 65°0.19
83 °
Lewisville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.19 in
Chance of precipitation32%
Record high95° (2023)
Record low53° (1982)
Mon, 0783° / 64°0.11
83 °
Lewisville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.11 in
Chance of precipitation22%
Record high96° (1990)
Record low50° (2017)
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 Lewisville, NC 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 Lewisville, NC 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.