Annual mean 18°C · wettest around February · prevailing wind W
Warmest
32.2 °C
Coldest
16.1 °C
Wettest
25%
Windiest
3.8 m/s
Prevailing
W
3.0 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 Montclair over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 8°C. The rainy (wet) season in Montclair runs from October to May, peaking in February with a 23% chance of rain on a given day. The dry season is June to September; July is the driest month, at 5%. Winds in Montclair are highest in May, averaging 2.9 m/s (10 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Montclair come in August, when the sky is typically 15% covered; May is the cloudiest month, at 40%.
Month by month Montclair 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
17°C
8°C
14°C
22%
31%
1.9 m/s
46
1
83
February
18°C
8°C
14°C
23%
31%
2.2 m/s
50
4
78
March
19°C
10°C
15°C
22%
39%
2.5 m/s
55
6
79
April
22°C
12°C
19°C
16%
33%
2.7 m/s
74
16
73
May
23°C
15°C
20°C
14%
40%
2.9 m/s
80
20
68
June
28°C
18°C
26°C
8%
28%
2.9 m/s
64
52
34
July
31°C
20°C
30°C
5%
16%
2.8 m/s
30
70
8
August
32°C
20°C
30°C
12%
15%
2.6 m/s
25
72
5
September
30°C
18°C
28°C
9%
23%
2.3 m/s
49
59
19
October
27°C
15°C
24°C
14%
22%
2.0 m/s
70
43
44
November
22°C
11°C
19°C
17%
21%
1.8 m/s
76
15
74
December
18°C
8°C
14°C
21%
28%
1.7 m/s
53
2
84
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 Montclair weather by season
Year round, Montclair has days of about 17°C at their warmest in January, its coolest month, and 32°C in August, its warmest; the coolest hours of the day run from 8°C to 20°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around February and least likely around July. 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.
Montclair weather in winterDecember to February
High 17°CLow 8°CRain 22%
Winter in Montclair has typical daily highs of about 17°C and lows of about 8°C, with a 22% chance of rain on a given day.
Montclair weather in springMarch to May
High 21°CLow 12°CRain 17%
Spring in Montclair has typical daily highs of about 21°C and lows of about 12°C, with a 17% chance of rain on a given day.
Montclair weather in summerJune to August
High 30°CLow 19°CRain 8%
Summer in Montclair has typical daily highs of about 30°C and lows of about 19°C, with a 8% chance of rain on a given day.
Montclair weather in autumnSeptember to November
High 26°CLow 15°CRain 13%
Autumn in Montclair has typical daily highs of about 26°C and lows of about 15°C, with a 13% chance of rain on a given day.
When is the rainy season in Montclair?
The rainy (wet) season in Montclair runs from October to May, peaking in February with a 23% chance of rain on a given day. The dry season is June to September; July is the driest month, at 5%.
What time of year is Montclair windiest?
Winds in Montclair are highest in May, averaging 2.9 m/s (10 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Montclair year round?
The average temperature in Montclair over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 8°C.