Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
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. Throughout January, Rancho Santa Margarita's nights cool down to an average of 49.6°F (9.8°C).Humidity
The average relative humidity in January is 58%.Rainfall
In Rancho Santa Margarita, during January, the rain falls for 5.3 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Rancho Santa Margarita, during the entire year, the rain falls for 64.2 days and collects up to 5.79" (147mm) of precipitation.Daylight
In January, the average length of the day is 10h and 13min.On the first day of the month, sunrise is at 6:54 am and sunset at 4:52 pm. On the last day of January, sunrise is at 6:47 am and sunset at 5:20 pm PST.
Sunshine
The average sunshine in January is 6.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 4 during January, leads to the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How much does it rain in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index reading in January in Rancho Santa Margarita?
Average temperature in January
Rancho Santa Margarita, CA
- Average high temperature in January: 65.5°F
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).
- Average low temperature in January: 49.6°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 in January
Rancho Santa Margarita, CA
- Average pressure in January: 30.1"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 in January
Rancho Santa Margarita, CA
- Average wind speed in January: 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 in January
Rancho Santa Margarita, CA
- Average humidity in January: 58%
The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in January
Rancho Santa Margarita, CA
- Average rainfall in January: 0.63"
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 in January
Rancho Santa Margarita, CA
- Average rainfall days in January: 5.3 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 in January /
Average sunshine in January
Rancho Santa Margarita, CA
- Average daylight in January: 10h and 1min
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 4min
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 in January
Rancho Santa Margarita, CA
- Average sunshine days in January: 24.3 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 in January
Rancho Santa Margarita, CA
- Average UV index in January: 4
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 in January
Rancho Santa Margarita, CA
- Average cloud cover in January: 22
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 in January
Rancho Santa Margarita, CA
- Average visibility in January: 6mi
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).
Rancho Santa Margarita, California, USA
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