March weather forecastSan Luis Obispo, CA

March
Weather in March
March, the first month of the spring in San Luis Obispo, is also an enjoyable month, with an average temperature ranging between max 64°F (17.8°C) and min 46.4°F (8°C).Temperature
February's transformation into March witnesses an average high-temperature of a still comfortable 64°F (17.8°C), noting a minor change from the preceding month. In San Luis Obispo, March is marked by an average low-temperature of 46.4°F (8°C).Humidity
With an average relative humidity of 69%, March is the most humid month.Rainfall
March is the month with the most rainfall. Rain falls for 10.5 days and accumulates 2.01" (51mm) of precipitation.Daylight
In March, the average length of the day is 12h and 0min.On the first day of the month, sunrise is at 6:30 am and sunset at 5:58 pm PST. On the last day of March, sunrise is at 6:49 am and sunset at 7:23 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.
Sunshine
In San Luis Obispo, the average sunshine in March is 8.5h.UV index
The average daily maximum UV index in March is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 4 in March transforms into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
San Luis Obispo, CA
- Average high temperature in March: 64°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).
- Average low temperature in March: 46.4°F
The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).
Average pressure in March
San Luis Obispo, CA
- Average pressure in March: 30.06"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in March
San Luis Obispo, CA
- Average wind speed in March: 6.5mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).
Average humidity in March
San Luis Obispo, CA
- Average humidity in March: 69%
The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).
Average rainfall in March
San Luis Obispo, CA
- Average rainfall in March: 2.01"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in March
San Luis Obispo, CA
- Average rainfall days in March: 10.5 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).
Average daylight in March /
Average sunshine in March
San Luis Obispo, CA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in March: 8h and 30min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in March
San Luis Obispo, CA
- Average sunshine days in March: 19.7 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).
Average UV index in March
San Luis Obispo, CA
- Average UV index in March: 4
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).
Average cloud cover in March
San Luis Obispo, CA
- Average cloud cover in March: 28
The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).
Average visibility in March
San Luis Obispo, CA
- Average visibility in March: 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).





