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 snowfall 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 coincides with an average high-temperature of a still refreshing 64.9°F (18.3°C), indicating a minimal shift from December's 63.1°F (17.3°C). South Pasadena records an average low of 48.7°F (9.3°C) throughout the nights in January.Humidity
The average relative humidity in January is 51%.Rainfall
In South Pasadena, California, in January, during 5.7 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In South Pasadena, during the entire year, the rain falls for 49.2 days and collects up to 8.23" (209mm) of precipitation.Snowfall
January through November are months without snowfall in South Pasadena.Daylight
In South Pasadena, the average length of the day in January is 10h and 11min.On the first day of January in South Pasadena, sunrise is at 6:58 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 5:21 pm PST.
Sunshine
The months with the least sunshine in South Pasadena are January, February and December, with an average of 6.9h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 4 in January leads to these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the temperature in January in South Pasadena?
What is the average humidity in January in South Pasadena?
How many days does it rain in January in South Pasadena?
When it does not snow in South Pasadena?
Does it snow in South Pasadena in January?
What is the average length of the day in January in South Pasadena?
What time are sunrise and sunset in January in South Pasadena?
What is the month with the least sunshine in South Pasadena?
How long on average sun shines in January in South Pasadena?
What are the months with the lowest UV index in South Pasadena?
What is the UV index reading in January in South Pasadena?
Average temperature in January
South Pasadena, CA
- Average high temperature in January: 64.9°F
The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in January: 48.7°F
The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (47.8°F).
Average pressure in January
South Pasadena, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
South Pasadena, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in January
South Pasadena, CA
- Average humidity in January: 51%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in January
South Pasadena, CA
- Average rainfall in January: 1.5"
The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
South Pasadena, CA
- Average rainfall days in January: 5.7 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1 days).
Average snowfall days in January
South Pasadena, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
South Pasadena, 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: 9h and 54min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in January
South Pasadena, CA
- Average sunshine days in January: 24.4 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21 days).
Average UV index in January
South Pasadena, 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, November and December (UV index 4).
Average cloud cover in January
South Pasadena, CA
- Average cloud cover in January: 20
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in January
South Pasadena, 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).
South Pasadena, California, USA
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