Annual mean 17°C · wettest around January · prevailing wind W
Warmest
28.9 °C
Coldest
17.0 °C
Wettest
34%
Windiest
4.4 m/s
Prevailing
W
3.9 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 Rancho San Diego over the whole year is 17°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 8°C. The rainy (wet) season in Rancho San Diego runs from November to May, peaking in January with a 33% chance of rain on a given day. The dry season is June to August; July is the driest month, at 3%. Winds in Rancho San Diego are highest in May, averaging 2.6 m/s (9 km/h), and lightest in November, at 2.0 m/s (7 km/h). The prevailing wind is from the W. The clearest skies in Rancho San Diego come in November, when the sky is typically 27% covered; May is the cloudiest month, at 60%.
Month by month Rancho San Diego 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
18°C
8°C
14°C
33%
36%
2.2 m/s
49
1
85
February
18°C
8°C
14°C
31%
38%
2.5 m/s
50
4
80
March
18°C
9°C
15°C
32%
48%
2.5 m/s
53
3
85
April
20°C
11°C
17°C
21%
45%
2.5 m/s
72
8
83
May
21°C
14°C
18°C
23%
60%
2.6 m/s
81
9
82
June
24°C
16°C
23°C
9%
48%
2.5 m/s
82
31
58
July
27°C
18°C
26°C
3%
35%
2.4 m/s
62
58
28
August
28°C
19°C
28°C
12%
32%
2.3 m/s
54
67
19
September
27°C
17°C
26°C
21%
37%
2.2 m/s
66
52
33
October
25°C
14°C
23°C
16%
32%
2.1 m/s
81
32
56
November
22°C
10°C
19°C
27%
27%
2.0 m/s
79
11
78
December
18°C
8°C
15°C
28%
33%
2.0 m/s
58
1
86
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 Rancho San Diego weather by season
Year round, Rancho San Diego has days of about 18°C at their warmest in January, its coolest month, and 28°C in August, its warmest; the coolest hours of the day run from 8°C to 19°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around January 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.
Rancho San Diego weather in winterDecember to February
High 18°CLow 8°CRain 31%
Winter in Rancho San Diego has typical daily highs of about 18°C and lows of about 8°C, with a 31% chance of rain on a given day.
Rancho San Diego weather in springMarch to May
High 20°CLow 11°CRain 25%
Spring in Rancho San Diego has typical daily highs of about 20°C and lows of about 11°C, with a 25% chance of rain on a given day.
Rancho San Diego weather in summerJune to August
High 27°CLow 18°CRain 8%
Summer in Rancho San Diego has typical daily highs of about 27°C and lows of about 18°C, with a 8% chance of rain on a given day.
Rancho San Diego weather in autumnSeptember to November
High 25°CLow 14°CRain 21%
Autumn in Rancho San Diego has typical daily highs of about 25°C and lows of about 14°C, with a 21% chance of rain on a given day.
When is the rainy season in Rancho San Diego?
The rainy (wet) season in Rancho San Diego runs from November to May, peaking in January with a 33% chance of rain on a given day. The dry season is June to August; July is the driest month, at 3%.
What time of year is Rancho San Diego windiest?
Winds in Rancho San Diego are highest in May, averaging 2.6 m/s (9 km/h), and lightest in November, at 2.0 m/s (7 km/h). The prevailing wind is from the W.
What is the average temperature in Rancho San Diego year round?
The average temperature in Rancho San Diego over the whole year is 17°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 8°C.