March weather forecastPortal, AZ
March
Weather in March
As March arrives in Portal, Arizona, the first hints of Spring begin to show. The weather gradually warms up, making way for delightful temperatures typical of the season. There is a dip in humidity relative to previous months, falling to 29%. Along with the rising temperature, it leads to a pleasant climate towards the end of the month. The wind speeds remain high at about 9.8mph (15.8km/h) but are countered by abundant sunshine and longer daylight hours.Temperature
The start of March brings a subtle rise in the average high-temperature, moving from a moderate 59.9°F (15.5°C) in February to a pleasant 68.2°F (20.1°C). Portal's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 46.4°F (8°C) in March.Humidity
In March, the average relative humidity is 29%.Rainfall
In Portal, during March, the rain falls for 3.8 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Portal, during the entire year, the rain falls for 73.4 days and collects up to 7.91" (201mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. March is the last month it regularly snows in Portal. During 0.2 snowfall days, in March, Portal aggregates 0.04" (1mm) of snow. In Portal, during the entire year, snow falls for 3.5 days and aggregates up to 1.3" (33mm) of snow.Daylight
In Portal, the average length of the day in March is 12h and 1min.On the first day of March, sunrise is at 6:42 am and sunset at 6:14 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:35 pm MST.
Sunshine
The average sunshine in March is 9.2h.UV index
In March, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 during March translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Portal, AZ
- Average high temperature in March: 68.2°F
The warmest month (with the highest average high temperature) is June (92.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in March: 46.4°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).
Average pressure in March
Portal, AZ
- Average pressure in March: 29.98"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in March
Portal, AZ
- Average wind speed in March: 9.8mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is January (7.1mph).
Average humidity in March
Portal, AZ
- Average humidity in March: 29%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is May (21%).
Average rainfall in March
Portal, AZ
- Average rainfall in March: 0.24"
The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is April (0.12").
Average rainfall days in March
Portal, AZ
- Average rainfall days in March: 3.8 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is May (2.1 days).
Average snowfall in March
Portal, AZ
- Average snowfall in March: 0.04"
The month with the highest snowfall is December (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Portal, AZ
- Average snowfall days in March: 0.2 days
The month with the highest number of snowfall days is December (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
Portal, AZ
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in March: 9h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in March
Portal, AZ
- Average sunshine days in March: 26.8 days
The month with the most sunshine days is May (28.5 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in March
Portal, AZ
- Average UV index in March: 5
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in March
Portal, AZ
- Average cloud cover in March: 15
The months with the most cloud cover are July and December (Cloud cover 20).
The month with the least cloud cover is May (Cloud cover 8).
Average visibility in March
Portal, 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).





