Annual mean 14°C · wettest around May · prevailing wind SW
Warmest
29.5 °C
Coldest
1.1 °C
Wettest
37%
Windiest
4.9 m/s
Prevailing
SW
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Rolla over the whole year is 14°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C. Rolla has no sharply defined rainy season: the chance of rain on a given day runs from 30% in September, the driest month, to 37% in May, the wettest. Winds in Rolla are highest in March, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Rolla come in June, when the sky is typically 22% covered; January is the cloudiest month, at 43%.
Month by month Rolla 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
2°C
-2°C
-3°C
31%
43%
3.3 m/s
1
0
12
February
6°C
-0°C
1°C
30%
36%
3.4 m/s
7
0
29
March
12°C
5°C
7°C
35%
39%
3.8 m/s
15
0
48
April
17°C
9°C
13°C
37%
34%
3.7 m/s
40
4
63
May
22°C
15°C
20°C
37%
35%
2.8 m/s
64
29
53
June
28°C
20°C
28°C
34%
22%
2.5 m/s
41
63
15
July
29°C
21°C
31°C
34%
23%
2.2 m/s
21
58
5
August
28°C
20°C
29°C
32%
25%
2.2 m/s
36
58
12
September
26°C
16°C
26°C
30%
22%
2.2 m/s
56
53
31
October
19°C
10°C
16°C
33%
29%
2.9 m/s
52
14
62
November
12°C
4°C
7°C
32%
29%
3.0 m/s
19
1
50
December
6°C
1°C
1°C
32%
36%
3.3 m/s
4
0
25
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 Rolla weather by season
Year round, Rolla has days of about 2°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -2°C to 21°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around May and least likely around September. 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.
Rolla weather in winterDecember to February
High 5°CLow -0°CRain 31%
Winter in Rolla has typical daily highs of about 5°C and lows of about -0°C, with a 31% chance of rain on a given day.
Rolla weather in springMarch to May
High 17°CLow 9°CRain 36%
Spring in Rolla has typical daily highs of about 17°C and lows of about 9°C, with a 36% chance of rain on a given day.
Rolla weather in summerJune to August
High 28°CLow 20°CRain 33%
Summer in Rolla has typical daily highs of about 28°C and lows of about 20°C, with a 33% chance of rain on a given day.
Rolla weather in autumnSeptember to November
High 19°CLow 10°CRain 32%
Autumn in Rolla has typical daily highs of about 19°C and lows of about 10°C, with a 32% chance of rain on a given day.
When is the rainy season in Rolla?
Rolla has no sharply defined rainy season: the chance of rain on a given day runs from 30% in September, the driest month, to 37% in May, the wettest.
What time of year is Rolla windiest?
Winds in Rolla are highest in March, averaging 3.8 m/s (14 km/h), and lightest in July, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Rolla year round?
The average temperature in Rolla over the whole year is 14°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C.