March weather forecastHerculaneum, MO
March
Weather in March
The first month of the spring, March, is a cool month in Herculaneum, Missouri, with an average temperature ranging between min 38.1°F (3.4°C) and max 54.9°F (12.7°C).Temperature
Herculaneum experiences a temperature shift with the start of March, with average high-temperatures moving from a chilly 43.5°F (6.4°C) in February to a cool 54.9°F (12.7°C). Throughout the month of March, Herculaneum sees a steady low-temperature average of 38.1°F (3.4°C).Humidity
In March, the average relative humidity is 76%.Rainfall
In Herculaneum, in March, it is raining for 14.8 days, with typically 2.8" (71mm) of accumulated precipitation. In Herculaneum, during the entire year, the rain falls for 155 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. March is the last month it regularly snows in Herculaneum. During 1.8 snowfall days, in March, Herculaneum aggregates 1.26" (32mm) of snow. In Herculaneum, during the entire year, snow falls for 19.9 days and aggregates up to 8.43" (214mm) of snow.Daylight
In Herculaneum, the average length of the day in March is 11h and 59min.On the first day of March in Herculaneum, sunrise is at 6:32 am and sunset at 5:55 pm CST. On the last day of the month, sunrise is at 6:46 am and sunset at 7:24 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 is 6.5h.UV index
In March, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during March morphs into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Herculaneum, MO
- Average high temperature in March: 54.9°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in March: 38.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in March
Herculaneum, MO
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
Herculaneum, MO
- Average wind speed in March: 8.6mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in March
Herculaneum, MO
- Average humidity in March: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in March
Herculaneum, MO
- Average rainfall in March: 2.8"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in March
Herculaneum, MO
- Average rainfall days in March: 14.8 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in March
Herculaneum, MO
- Average snowfall in March: 1.26"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Herculaneum, MO
- Average snowfall days in March: 1.8 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Herculaneum, MO
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in March: 6h and 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in March
Herculaneum, MO
- Average sunshine days in March: 13.1 days
The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in March
Herculaneum, MO
- Average UV index in March: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in March
Herculaneum, MO
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in March
Herculaneum, MO
- 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).





