Annual mean 15°C · wettest around December · prevailing wind W
Warmest
29.9 °C
Coldest
6.5 °C
Wettest
68%
Windiest
3.7 m/s
Prevailing
W
2.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Lewisville over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 1°C. Lewisville has no sharply defined rainy season: the chance of rain on a given day runs from 60% in June, the driest month, to 67% in December, the wettest. Winds in Lewisville are highest in March, averaging 2.4 m/s (9 km/h), and lightest in August, at 1.3 m/s (5 km/h). The prevailing wind is from the W. The clearest skies in Lewisville come in November, when the sky is typically 34% covered; February is the cloudiest month, at 46%.
Month by month Lewisville climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
1°C
3°C
64%
43%
1.9 m/s
4
0
26
February
11°C
4°C
7°C
64%
46%
2.1 m/s
15
0
44
March
14°C
6°C
11°C
64%
41%
2.4 m/s
29
1
59
April
19°C
10°C
16°C
63%
38%
2.3 m/s
55
11
64
May
23°C
15°C
22°C
63%
46%
1.9 m/s
62
35
43
June
27°C
19°C
28°C
60%
40%
1.6 m/s
39
59
14
July
30°C
22°C
32°C
61%
37%
1.4 m/s
10
54
2
August
28°C
20°C
30°C
61%
44%
1.3 m/s
23
56
6
September
25°C
17°C
26°C
63%
43%
1.5 m/s
51
50
25
October
21°C
11°C
20°C
62%
37%
1.4 m/s
65
19
62
November
14°C
5°C
11°C
64%
34%
1.5 m/s
29
3
62
December
9°C
3°C
6°C
67%
43%
1.7 m/s
9
0
39
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Lewisville weather by season
Year round, Lewisville has days of about 7°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from 1°C to 22°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around December and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Lewisville weather in winterDecember to February
High 9°CLow 3°CRain 65%
Winter in Lewisville has typical daily highs of about 9°C and lows of about 3°C, with a 65% chance of rain on a given day.
Lewisville weather in springMarch to May
High 19°CLow 11°CRain 63%
Spring in Lewisville has typical daily highs of about 19°C and lows of about 11°C, with a 63% chance of rain on a given day.
Lewisville weather in summerJune to August
High 28°CLow 20°CRain 61%
Summer in Lewisville has typical daily highs of about 28°C and lows of about 20°C, with a 61% chance of rain on a given day.
Lewisville weather in autumnSeptember to November
High 20°CLow 11°CRain 63%
Autumn in Lewisville has typical daily highs of about 20°C and lows of about 11°C, with a 63% chance of rain on a given day.
When is the rainy season in Lewisville?
Lewisville has no sharply defined rainy season: the chance of rain on a given day runs from 60% in June, the driest month, to 67% in December, the wettest.
What time of year is Lewisville windiest?
Winds in Lewisville are highest in March, averaging 2.4 m/s (9 km/h), and lightest in August, at 1.3 m/s (5 km/h). The prevailing wind is from the W.
What is the average temperature in Lewisville year round?
The average temperature in Lewisville over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 1°C.