Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
The arrival of March brings a significant change in Portsmouth's weather, with average high-temperatures climbing from February's subzero cold 31.5°F (-0.3°C) to a frosty 46.9°F (8.3°C). Portsmouth's average low-temperature is measured at a freezing cold 31.8°F (-0.1°C) during March.Humidity
In Portsmouth, the average relative humidity in March is 74%.Rainfall
In Portsmouth, Iowa, in March, it is raining for 8.8 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Portsmouth, there are 113.5 rainfall days, and 15.71" (399mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Portsmouth, Iowa. In Portsmouth, Iowa, in March, during 4.8 snowfall days, 1.22" (31mm) of snow is typically accumulated. In Portsmouth, during the entire year, snow falls for 31.5 days and aggregates up to 7.13" (181mm) of snow.Daylight
In March, the average length of the day in Portsmouth is 11h and 58min.On the first day of the month, sunrise is at 6:55 am and sunset at 6:13 pm CST. On the last day of March, in Portsmouth, Iowa, sunrise is at 7:05 am and sunset at 7:46 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.
Sunshine
In March, the average sunshine in Portsmouth, Iowa, is 6.3h.UV index
In Portsmouth, the average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 in March translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the average March temperature in Portsmouth?
What is the average humidity in March in Portsmouth?
How many days does it rain in March in Portsmouth?
How many days does it snow in March in Portsmouth?
What is the average length of the day in March in Portsmouth?
When are sunrise and sunset in March in Portsmouth?
When does Daylight Saving Time (DST) start in March in Portsmouth?
How long on average sun shines in March in Portsmouth?
How high is the UV index in March in Portsmouth?
Average temperature in March
Portsmouth, IA
- Average high temperature in March: 46.9°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in March: 31.8°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in March
Portsmouth, IA
- Average pressure in March: 30.06"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in March
Portsmouth, IA
- Average wind speed in March: 10.7mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in March
Portsmouth, IA
- Average humidity in March: 74%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (68%).
Average rainfall in March
Portsmouth, IA
- Average rainfall in March: 0.91"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in March
Portsmouth, IA
- Average rainfall days in March: 8.8 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in March
Portsmouth, IA
- Average snowfall in March: 1.22"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Portsmouth, IA
- Average snowfall days in March: 4.8 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Portsmouth, IA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in March: 6h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in March
Portsmouth, IA
- Average sunshine days in March: 17.9 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in March
Portsmouth, IA
- Average UV index in March: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in March
Portsmouth, IA
- Average cloud cover in March: 48
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in March
Portsmouth, IA
- 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).
Portsmouth, Iowa, USA
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