Annual mean 21°C · wettest around April · prevailing wind E
Warmest
39.0 °C
Coldest
11.4 °C
Wettest
25%
Windiest
4.9 m/s
Prevailing
E
3.9 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 Summerlin South over the whole year is 21°C. July is the hottest month, with highs of about 39°C; January is the coldest, with lows of about 4°C. Summerlin South has no sharply defined rainy season: the chance of rain on a given day runs from 5% in June, the driest month, to 13% in April, the wettest. Winds in Summerlin South are highest in April, averaging 4.1 m/s (15 km/h), and lightest in December, at 2.5 m/s (9 km/h). The prevailing wind is from the E. The clearest skies in Summerlin South come in June, when the sky is typically 10% covered; March is the cloudiest month, at 26%.
Month by month Summerlin South 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
12°C
4°C
8°C
11%
25%
2.7 m/s
4
0
60
February
15°C
6°C
9°C
13%
22%
3.4 m/s
20
0
65
March
18°C
9°C
12°C
11%
26%
3.9 m/s
37
2
76
April
24°C
14°C
18°C
13%
17%
4.1 m/s
69
15
70
May
29°C
19°C
23°C
9%
15%
4.0 m/s
67
43
44
June
36°C
26°C
31°C
5%
10%
4.1 m/s
25
56
8
July
39°C
29°C
35°C
10%
13%
3.7 m/s
5
35
1
August
37°C
27°C
34°C
11%
13%
3.5 m/s
6
42
1
September
33°C
22°C
29°C
11%
10%
3.2 m/s
38
62
14
October
26°C
15°C
21°C
9%
11%
2.9 m/s
72
31
56
November
18°C
8°C
13°C
8%
14%
2.8 m/s
42
1
79
December
13°C
4°C
8°C
9%
23%
2.5 m/s
8
0
65
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 Summerlin South weather by season
Year round, Summerlin South has days of about 12°C at their warmest in January, its coolest month, and 39°C in July, its warmest; the coolest hours of the day run from 4°C to 29°C through the year, and the average temperature over the year is 21°C around the clock. Rain is most likely around April 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.
Summerlin South weather in winterDecember to February
High 13°CLow 5°CRain 11%
Winter in Summerlin South has typical daily highs of about 13°C and lows of about 5°C, with a 11% chance of rain on a given day.
Summerlin South weather in springMarch to May
High 24°CLow 14°CRain 11%
Spring in Summerlin South has typical daily highs of about 24°C and lows of about 14°C, with a 11% chance of rain on a given day.
Summerlin South weather in summerJune to August
High 37°CLow 27°CRain 9%
Summer in Summerlin South has typical daily highs of about 37°C and lows of about 27°C, with a 9% chance of rain on a given day.
Summerlin South weather in autumnSeptember to November
High 25°CLow 15°CRain 10%
Autumn in Summerlin South has typical daily highs of about 25°C and lows of about 15°C, with a 10% chance of rain on a given day.
When is the rainy season in Summerlin South?
Summerlin South has no sharply defined rainy season: the chance of rain on a given day runs from 5% in June, the driest month, to 13% in April, the wettest.
What time of year is Summerlin South windiest?
Winds in Summerlin South are highest in April, averaging 4.1 m/s (15 km/h), and lightest in December, at 2.5 m/s (9 km/h). The prevailing wind is from the E.
What is the average temperature in Summerlin South year round?
The average temperature in Summerlin South over the whole year is 21°C. July is the hottest month, with highs of about 39°C; January is the coldest, with lows of about 4°C.