March weather forecastSan Luis, AZ
March
Weather in March
March brings the arrival of spring to San Luis, Arizona, resulting in a significant increase in temperatures from 72.9°F (22.7°C) to 80.2°F (26.8°C). This marks a transition from cooler months to a warmer season. The lengthening days accompanied by a higher UV index indicate that sun protection becomes essential during this time. With relative humidity and rainfall remaining low, the weather stays dry. The aforementioned climatic conditions make March the beginning of San Luis's warm season.Temperature
March's onset brings a minor rise in the average high-temperature, moving from a pleasant 72.9°F (22.7°C) in February to a moderately hot 80.2°F (26.8°C). San Luis sees a major change from daytime highs, with the nighttime temperature dipping to a moderate 58.3°F (14.6°C) on average during March.Humidity
In San Luis, the average relative humidity in March is 29%.Rainfall
In San Luis, in March, it is raining for 1.7 days, with typically 0.31" (8mm) of accumulated precipitation. In San Luis, Arizona, during the entire year, the rain falls for 25 days and collects up to 2.24" (57mm) of precipitation.Daylight
The average length of the day in March is 12h and 1min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:36 pm. On the last day of March, sunrise is at 6:27 am and sunset at 6:58 pm MST.
Sunshine
In San Luis, the average sunshine in March is 9.4h.UV index
The average daily maximum UV index in March is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In March, the maximum UV index of 6 transforms into these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
San Luis, AZ
- Average high temperature in March: 80.2°F
The warmest month (with the highest average high temperature) is July (106.2°F).
The month with the lowest average high temperature is December (67.1°F).
- Average low temperature in March: 58.3°F
The month with the highest average low temperature is August (86.2°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).
Average pressure in March
San Luis, AZ
- Average pressure in March: 29.95"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.75"Hg).
Average wind speed in March
San Luis, AZ
- Average wind speed in March: 7.3mph
The windiest month (with the highest average wind speed) is July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.7mph).
Average humidity in March
San Luis, AZ
- Average humidity in March: 29%
The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (23%).
Average rainfall in March
San Luis, AZ
- Average rainfall in March: 0.31"
The wettest month (with the highest rainfall) is July (0.39").
The driest month (with the least rainfall) is May (0").
Average rainfall days in March
San Luis, AZ
- Average rainfall days in March: 1.7 days
The month with the highest number of rainy days is July (5.1 days).
The month with the least rainy days is May (0.3 days).
Average daylight in March /
Average sunshine in March
San Luis, AZ
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in March: 9h and 24min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in March
San Luis, AZ
- Average sunshine days in March: 29.3 days
The month with the most sunshine days is May (30.4 days).
The month with the least sunshine days is July (24.3 days).
Average UV index in March
San Luis, AZ
- Average UV index in March: 6
The months with the highest UV index are June, July, August and September (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in March
San Luis, AZ
- Average cloud cover in March: 14
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in March
San Luis, AZ
- 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).





