Annual mean 13°C · wettest around December · prevailing wind W
Warmest
29.4 °C
Coldest
3.0 °C
Wettest
30%
Windiest
3.7 m/s
Prevailing
W
2.9 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 Darby over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -1°C. Upper Darby has no sharply defined rainy season: the chance of rain on a given day runs from 24% in October, the driest month, to 31% in December, the wettest. Winds in Upper Darby are highest in March, averaging 2.7 m/s (10 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Upper Darby come in July, when the sky is typically 38% covered; May is the cloudiest month, at 53%.
Month by month Upper Darby 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
3°C
-1°C
-2°C
28%
51%
2.5 m/s
1
0
10
February
6°C
1°C
1°C
31%
47%
2.3 m/s
3
0
21
March
9°C
4°C
4°C
29%
46%
2.7 m/s
10
0
37
April
15°C
9°C
11°C
28%
49%
2.6 m/s
32
4
62
May
20°C
14°C
18°C
30%
53%
2.1 m/s
60
17
65
June
26°C
19°C
25°C
26%
40%
2.0 m/s
60
47
34
July
29°C
23°C
31°C
28%
38%
1.7 m/s
24
63
6
August
27°C
21°C
28°C
25%
40%
1.7 m/s
41
61
15
September
24°C
17°C
24°C
26%
43%
1.8 m/s
68
38
44
October
18°C
12°C
16°C
24%
46%
1.8 m/s
56
11
73
November
11°C
5°C
7°C
26%
38%
2.1 m/s
15
0
47
December
6°C
2°C
1°C
31%
50%
2.1 m/s
1
0
18
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 Darby weather by season
Year round, Upper Darby has days of about 3°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -1°C to 23°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around December and least likely around October. 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 Darby weather in winterDecember to February
High 5°CLow 1°CRain 30%
Winter in Upper Darby has typical daily highs of about 5°C and lows of about 1°C, with a 30% chance of rain on a given day.
Upper Darby weather in springMarch to May
High 15°CLow 9°CRain 29%
Spring in Upper Darby has typical daily highs of about 15°C and lows of about 9°C, with a 29% chance of rain on a given day.
Upper Darby weather in summerJune to August
High 27°CLow 21°CRain 26%
Summer in Upper Darby has typical daily highs of about 27°C and lows of about 21°C, with a 26% chance of rain on a given day.
Upper Darby weather in autumnSeptember to November
High 18°CLow 11°CRain 25%
Autumn in Upper Darby has typical daily highs of about 18°C and lows of about 11°C, with a 25% chance of rain on a given day.
When is the rainy season in Upper Darby?
Upper Darby has no sharply defined rainy season: the chance of rain on a given day runs from 24% in October, the driest month, to 31% in December, the wettest.
What time of year is Upper Darby windiest?
Winds in Upper Darby are highest in March, averaging 2.7 m/s (10 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Upper Darby year round?
The average temperature in Upper Darby over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -1°C.