Annual mean 18°C · wettest around February · prevailing wind SW
Warmest
29.4 °C
Coldest
16.1 °C
Wettest
18%
Windiest
3.7 m/s
Prevailing
SW
2.9 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 Rosemead over the whole year is 18°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 9°C. Rosemead has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in February, the wettest. Winds in Rosemead are highest in April, averaging 2.6 m/s (9 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the SW. The clearest skies in Rosemead come in August, when the sky is typically 19% covered; May is the cloudiest month, at 44%.
Month by month Rosemead 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
9°C
14°C
16%
28%
1.8 m/s
50
2
82
February
17°C
10°C
15°C
16%
29%
2.1 m/s
52
5
79
March
18°C
11°C
15°C
15%
35%
2.4 m/s
56
5
80
April
21°C
13°C
18°C
9%
32%
2.6 m/s
73
12
76
May
21°C
15°C
19°C
8%
44%
2.6 m/s
81
13
76
June
25°C
18°C
24°C
4%
36%
2.6 m/s
77
38
50
July
28°C
20°C
27°C
2%
21%
2.6 m/s
54
63
22
August
28°C
20°C
28°C
6%
19%
2.4 m/s
45
70
14
September
27°C
19°C
27°C
5%
25%
2.2 m/s
58
56
26
October
25°C
16°C
23°C
9%
24%
2.0 m/s
75
40
48
November
21°C
12°C
19°C
11%
20%
1.7 m/s
79
13
75
December
17°C
9°C
15°C
14%
25%
1.7 m/s
57
2
85
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 Rosemead weather by season
Year round, Rosemead has days of about 17°C at their warmest in January, its coolest month, and 28°C in August, its warmest; the coolest hours of the day run from 9°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.
Rosemead weather in winterDecember to February
High 17°CLow 9°CRain 16%
Winter in Rosemead has typical daily highs of about 17°C and lows of about 9°C, with a 16% chance of rain on a given day.
Rosemead weather in springMarch to May
High 20°CLow 13°CRain 11%
Spring in Rosemead has typical daily highs of about 20°C and lows of about 13°C, with a 11% chance of rain on a given day.
Rosemead weather in summerJune to August
High 27°CLow 19°CRain 4%
Summer in Rosemead has typical daily highs of about 27°C and lows of about 19°C, with a 4% chance of rain on a given day.
Rosemead weather in autumnSeptember to November
High 24°CLow 15°CRain 8%
Autumn in Rosemead has typical daily highs of about 24°C and lows of about 15°C, with a 8% chance of rain on a given day.
When is the rainy season in Rosemead?
Rosemead has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in February, the wettest.
What time of year is Rosemead windiest?
Winds in Rosemead are highest in April, averaging 2.6 m/s (9 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the SW.
What is the average temperature in Rosemead year round?
The average temperature in Rosemead over the whole year is 18°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 9°C.