Annual mean 17°C · wettest around August · prevailing wind SE
Warmest
34.0 °C
Coldest
8.8 °C
Wettest
35%
Windiest
6.0 m/s
Prevailing
SE
4.7 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 Roswell over the whole year is 17°C. July is the hottest month, with highs of about 33°C; January is the coldest, with lows of about -1°C. Roswell has no sharply defined rainy season: the chance of rain on a given day runs from 22% in February, the driest month, to 29% in August, the wettest. Winds in Roswell are highest in April, averaging 4.9 m/s (18 km/h), and lightest in December, at 3.4 m/s (12 km/h). The prevailing wind is from the SE. The clearest skies in Roswell come in June, when the sky is typically 11% covered; November is the cloudiest month, at 18%.
Month by month Roswell 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
10°C
-1°C
4°C
26%
17%
3.6 m/s
3
0
35
February
13°C
1°C
7°C
22%
14%
4.3 m/s
16
0
51
March
18°C
6°C
12°C
22%
14%
4.7 m/s
36
2
71
April
23°C
10°C
16°C
26%
13%
4.9 m/s
61
10
70
May
28°C
15°C
23°C
24%
13%
4.9 m/s
71
42
45
June
33°C
21°C
29°C
28%
11%
4.6 m/s
32
67
11
July
33°C
22°C
31°C
27%
12%
3.9 m/s
15
68
4
August
32°C
21°C
30°C
29%
15%
3.6 m/s
21
69
6
September
29°C
17°C
26°C
28%
16%
3.5 m/s
51
68
21
October
22°C
11°C
18°C
28%
18%
3.6 m/s
67
23
60
November
15°C
5°C
10°C
26%
18%
3.6 m/s
29
1
67
December
11°C
1°C
6°C
23%
15%
3.4 m/s
8
0
49
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 Roswell weather by season
Year round, Roswell has days of about 10°C at their warmest in January, its coolest month, and 33°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 17°C around the clock. Rain is most likely around August and least likely around February. 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.
Roswell weather in winterDecember to February
High 11°CLow 1°CRain 24%
Winter in Roswell has typical daily highs of about 11°C and lows of about 1°C, with a 24% chance of rain on a given day.
Roswell weather in springMarch to May
High 23°CLow 10°CRain 24%
Spring in Roswell has typical daily highs of about 23°C and lows of about 10°C, with a 24% chance of rain on a given day.
Roswell weather in summerJune to August
High 33°CLow 21°CRain 28%
Summer in Roswell has typical daily highs of about 33°C and lows of about 21°C, with a 28% chance of rain on a given day.
Roswell weather in autumnSeptember to November
High 22°CLow 11°CRain 27%
Autumn in Roswell has typical daily highs of about 22°C and lows of about 11°C, with a 27% chance of rain on a given day.
When is the rainy season in Roswell?
Roswell has no sharply defined rainy season: the chance of rain on a given day runs from 22% in February, the driest month, to 29% in August, the wettest.
What time of year is Roswell windiest?
Winds in Roswell are highest in April, averaging 4.9 m/s (18 km/h), and lightest in December, at 3.4 m/s (12 km/h). The prevailing wind is from the SE.
What is the average temperature in Roswell year round?
The average temperature in Roswell over the whole year is 17°C. July is the hottest month, with highs of about 33°C; January is the coldest, with lows of about -1°C.