Annual mean 12°C · wettest around May · prevailing wind SW
Warmest
27.1 °C
Coldest
-0.1 °C
Wettest
25%
Windiest
4.8 m/s
Prevailing
SW
3.9 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 Upper St. Clair over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C. Upper St. Clair has no sharply defined rainy season: the chance of rain on a given day runs from 20% in September, the driest month, to 28% in May, the wettest. Winds in Upper St. Clair are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Upper St. Clair come in September, when the sky is typically 46% covered; January is the cloudiest month, at 74%.
Month by month Upper St. Clair 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
0°C
-3°C
-5°C
24%
74%
3.6 m/s
1
0
7
February
4°C
-0°C
-2°C
26%
64%
3.6 m/s
2
0
16
March
9°C
3°C
3°C
25%
59%
3.7 m/s
9
0
33
April
14°C
7°C
10°C
27%
59%
3.5 m/s
29
2
56
May
20°C
12°C
17°C
28%
57%
2.8 m/s
61
15
64
June
25°C
17°C
24°C
25%
50%
2.6 m/s
70
37
44
July
27°C
20°C
27°C
25%
48%
2.3 m/s
52
64
15
August
26°C
18°C
26°C
23%
50%
2.2 m/s
61
56
25
September
23°C
15°C
22°C
20%
46%
2.3 m/s
71
33
52
October
17°C
10°C
14°C
23%
52%
2.6 m/s
43
8
67
November
9°C
4°C
4°C
22%
55%
3.2 m/s
10
0
34
December
4°C
1°C
-1°C
25%
71%
3.3 m/s
1
0
15
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 Upper St. Clair weather by season
Year round, Upper St. Clair has days of about 0°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -3°C to 20°C through the year, and the average temperature over the year is 12°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.
Upper St. Clair weather in winterDecember to February
High 3°CLow -1°CRain 25%
Winter in Upper St. Clair has typical daily highs of about 3°C and lows of about -1°C, with a 25% chance of rain on a given day.
Upper St. Clair weather in springMarch to May
High 14°CLow 7°CRain 27%
Spring in Upper St. Clair has typical daily highs of about 14°C and lows of about 7°C, with a 27% chance of rain on a given day.
Upper St. Clair weather in summerJune to August
High 26°CLow 18°CRain 24%
Summer in Upper St. Clair has typical daily highs of about 26°C and lows of about 18°C, with a 24% chance of rain on a given day.
Upper St. Clair weather in autumnSeptember to November
High 16°CLow 9°CRain 22%
Autumn in Upper St. Clair has typical daily highs of about 16°C and lows of about 9°C, with a 22% chance of rain on a given day.
When is the rainy season in Upper St. Clair?
Upper St. Clair has no sharply defined rainy season: the chance of rain on a given day runs from 20% in September, the driest month, to 28% in May, the wettest.
What time of year is Upper St. Clair windiest?
Winds in Upper St. Clair are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Upper St. Clair year round?
The average temperature in Upper St. Clair over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C.