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Weather in San Diego County for January 2025

Your guide to San Diego County weather in January - trends and predictions
  • In general, the average temperature in San Diego County at the beginning of January is 15.6 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 17.7 °F by the end of January.

  • Precipitation in San Diego County during January is a rare event, with an average of fewer than 2 rainy days.

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Average dry days
30
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/10°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
61 %
Avg humidity

San Diego County in January average weather

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Temperatures trend during January in San Diego County

See the weather trend as well as the moving average line

January weather day by day

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Date Weather Temperatures Rain UV More
Jan. 1 Moderate or heavy rain shower
Moderate or heavy rain shower
15° /12° 14.3 mm 4
Jan. 2 Patchy rain possible
Patchy rain possible
15° /12° 1 mm 4
Jan. 3 Moderate rain at times
Moderate rain at times
15° /12° 6.9 mm 4
Jan. 4 Patchy rain possible
Patchy rain possible
16° /12° 1.7 mm 5
Jan. 5 Moderate or heavy rain shower
Moderate or heavy rain shower
16° /11° 7.2 mm 4
Jan. 6 Cloudy
Cloudy
16° /11° 0 mm 5
Jan. 7 Overcast
Overcast
16° /11° 0.8 mm 4
Jan. 8 Partly cloudy
Partly cloudy
16° /10° 0 mm 5
Jan. 9 Patchy rain possible
Patchy rain possible
17° /11° 0.2 mm 5
Jan. 10 Moderate or heavy rain shower
Moderate or heavy rain shower
16° /11° 10.8 mm 5
Jan. 11 Cloudy
Cloudy
16° /11° 0.7 mm 4
Jan. 12 Cloudy
Cloudy
17° /11° 0 mm 5
Jan. 13 Overcast
Overcast
17° /11° 0 mm 5
Jan. 14 Moderate or heavy rain shower
Moderate or heavy rain shower
15° /12° 14.3 mm 4
Jan. 15 Moderate rain at times
Moderate rain at times
16° /12° 6.2 mm 4
Jan. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
16° /12° 13.3 mm 4
Jan. 17 Patchy rain possible
Patchy rain possible
15° /11° 2.9 mm 4
Jan. 18 Partly cloudy
Partly cloudy
17° /11° 0 mm 5
Jan. 19 Patchy rain possible
Patchy rain possible
15° /11° 0.4 mm 4
Jan. 20 Patchy rain possible
Patchy rain possible
16° /12° 6.7 mm 4
Jan. 21 Sunny
Sunny
16° /11° 3.5 mm 5
Jan. 22 Sunny
Sunny
15° /11° 6.8 mm 4
Jan. 23 Sunny
Sunny
16° /10° 0.9 mm 5
Jan. 24 Sunny
Sunny
17° /10° 0 mm 5
Jan. 25 Overcast
Overcast
16° /10° 0.1 mm 4
Jan. 26 Sunny
Sunny
20° /11° 0 mm 6
Jan. 27 Sunny
Sunny
20° /11° 0 mm 6
Jan. 28 Cloudy
Cloudy
18° /12° 0.1 mm 5
Jan. 29 Patchy rain possible
Patchy rain possible
17° /13° 1.8 mm 4
Jan. 30 Moderate or heavy rain shower
Moderate or heavy rain shower
17° /12° 9.8 mm 5
Jan. 31 Sunny
Sunny
16° /12° 0.1 mm 5
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Important Notice
Our weather forecast for San Diego County in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Diego County forecast closer to your planned date for the most up-to-date weather information.

San Diego County in January - FAQ

What are the expected maximum and minimum temperatures in San Diego County during January?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Diego County during January?
Significant rainfall exceeding 220.6 mm is expected in San Diego County during January, occurring over more than 1 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in San Diego County during January?
The average wind speed in San Diego County during January is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

January rainfall patterns in San Diego County

Explore the daily rainfall trends and prepare for San Diego Countys January weather 💧
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Location coordinates Where is San Diego County?

Get accurate weather forecasts for San Diego County, located at latitude 32.716 and longitude -117.165. Stay updated with localized weather information tailored for San Diego County.

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