Climate and monthly weather forecastRancho Santa Margarita, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in Rancho Santa Margarita, California, with an average temperature fluctuating between 49.6°F (9.8°C) and 65.5°F (18.6°C). The arrival of January brings an average high-temperature of a still enjoyable 65.5°F (18.6°C), closely following the temperature pattern of December. Weather in January »Weather in February
February, the last month of the winter in Rancho Santa Margarita, is another refreshing month, with an average temperature ranging between max 64°F (17.8°C) and min 48.9°F (9.4°C). Rancho Santa Margarita's average high-temperature in February is a still refreshing 64°F (17.8°C), indicating a subtle variation from January. Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Rancho Santa Margarita, California, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 50.4°F (10.2°C). With March's arrival, Rancho Santa Margarita's weather records an average high-temperature of a still enjoyable 66.2°F (19°C), marking little difference from February's 64°F (17.8°C). Weather in March »Weather in April
April is an agreeable spring month in Rancho Santa Margarita, California, with an average temperature ranging between max 68.5°F (20.3°C) and min 52.7°F (11.5°C). April brings a marginal elevation to a pleasant 68.5°F (20.3°C) from March's 66.2°F (19°C) in Rancho Santa Margarita's average high-temperatures. Weather in April »Weather in May
May, the last month of the spring in Rancho Santa Margarita, is another pleasant month, with an average temperature varying between 55.6°F (13.1°C) and 70.2°F (21.2°C). Rancho Santa Margarita sees the arrival of May with an average high-temperature of a still agreeable 70.2°F (21.2°C), indicating a subtle variation from April. Weather in May »Weather in June
June, the first month of the summer in Rancho Santa Margarita, is a moderately hot month, with an average temperature ranging between max 74.3°F (23.5°C) and min 57.6°F (14.2°C). Rancho Santa Margarita experiences an average high-temperature of a moderately hot 74.3°F (23.5°C) with the onset of June, subtly varied from May's 70.2°F (21.2°C). Weather in June »Weather in July
July, like June, in Rancho Santa Margarita, California, is another warm summer month, with an average temperature ranging between max 79.2°F (26.2°C) and min 62.8°F (17.1°C). The arrival of July sees a recorded average high-temperature of a still warm 79.2°F (26.2°C), showing little divergence from the previous month's conditions. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Rancho Santa Margarita, California, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.2°F (17.9°C). Rancho Santa Margarita reaches its highest average temperatures in August, measuring 81.1°F (27.3°C) at the peak and 64.2°F (17.9°C) at the lowest. The average heat index in August is evaluated at 84.2°F (29°C). Weather in August »Weather in September
September, the first month of the autumn in Rancho Santa Margarita, is also a moderately hot month, with an average temperature varying between 63.5°F (17.5°C) and 79.7°F (26.5°C). September's advent presents an average high-temperature of a still moderately hot 79.7°F (26.5°C), indicating a slight variation from the conditions of the previous month. Weather in September »Weather in October
October, the same as September, is another warm autumn month in Rancho Santa Margarita, California, with an average temperature varying between 60.1°F (15.6°C) and 75.2°F (24°C). The arrival of October marks a slight shift to an average high-temperature of a still moderately hot 75.2°F (24°C) from September's 79.7°F (26.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another pleasant month in Rancho Santa Margarita, California, with an average temperature fluctuating between 54.7°F (12.6°C) and 69.4°F (20.8°C). The advent of November brings a slight shift in average high-temperature, moving from a warm 75.2°F (24°C) in October to an agreeable 69.4°F (20.8°C). Weather in November »Weather in December
December, the first month of the winter in Rancho Santa Margarita, is still a refreshing month, with an average temperature ranging between min 49.8°F (9.9°C) and max 63°F (17.2°C). Rancho Santa Margarita reaches its lowest average temperatures in December, measuring 63°F (17.2°C) at the peak and 49.8°F (9.9°C) at the lowest. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Rancho Santa Margarita, CA
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (63°F).
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure
Rancho Santa Margarita, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed
Rancho Santa Margarita, CA
- Average wind speed in January:
5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.9mph - Average wind speed in December:
5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity
Rancho Santa Margarita, CA
The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall
Rancho Santa Margarita, CA
- Average rainfall in January:
0.63" - Average rainfall in February:
0.71" - Average rainfall in March:
0.67" - Average rainfall in April:
0.43" - Average rainfall in May:
0.35" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.35" - Average rainfall in September:
0.24" - Average rainfall in October:
0.39" - Average rainfall in November:
0.51" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Rancho Santa Margarita, CA
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
6.5 days - Average rainfall days in March:
8.6 days - Average rainfall days in April:
7.1 days - Average rainfall days in May:
5.5 days - Average rainfall days in June:
1.9 days
- Average rainfall days in July:
5.4 days - Average rainfall days in August:
3.3 days - Average rainfall days in September:
4.5 days - Average rainfall days in October:
4.5 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (1.9 days).
Average daylight / Average sunshine
Rancho Santa Margarita, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 42min - Average sunshine in March:
8h and 30min - Average sunshine in April:
10h and 42min - Average sunshine in May:
10h and 54min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 30min - Average sunshine in October:
8h and 24min - Average sunshine in November:
7h and 0min - Average sunshine in December:
6h and 36min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days
Rancho Santa Margarita, CA
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
20.5 days - Average sunshine days in April:
20.1 days - Average sunshine days in May:
20.3 days - Average sunshine days in June:
23.7 days
- Average sunshine days in July:
22.8 days - Average sunshine days in August:
24.1 days - Average sunshine days in September:
22.2 days - Average sunshine days in October:
23.6 days - Average sunshine days in November:
22.9 days - Average sunshine days in December:
22.7 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is February (19.8 days).
Average UV index
Rancho Santa Margarita, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover
Rancho Santa Margarita, CA
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility
Rancho Santa Margarita, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





