March weather forecast
St. Louis, MO

A beautiful twilight over the Gateway Arch in St. Louis, Missouri
A beautiful twilight over the Gateway Arch in St. Louis, Missouri

Weather in March

March, the first month of the spring in St. Louis, is a mild month, with an average temperature ranging between min 36.7°F (2.6°C) and max 55.9°F (13.3°C).

Temperature

In March, the average high-temperature in St. Louis rises from a chilly 45°F (7.2°C) in February to a moderate 55.9°F (13.3°C). In St. Louis, the average low-temperature is 36.7°F (2.6°C).

Humidity

In March, the average relative humidity in St. Louis, Missouri, is 68.3%.

Rainfall

In St. Louis, in March, during 10.3 rainfall days, 3.32" (84.3mm) of precipitation is typically accumulated. In St. Louis, during the entire year, the rain falls for 112.6 days and collects up to 40.96" (1040.3mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in St. Louis. In March, in St. Louis, it is snowing for 1.7 days. Throughout March, 2.3" (58.4mm) of snow is accumulated. Throughout the year, in St. Louis, there are 14.5 snowfall days, and 17.7" (449.6mm) of snow is accumulated.

Daylight

The average length of the day in March in St. Louis, Missouri, is 11h and 59min.
On the first day of March in St. Louis, sunrise is at 6:32 am and sunset at 5:53 pm CST. On the last day of the month, sunrise is at 6:46 am and sunset at 7:23 pm CDT.
Note: On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 6. 2022, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

In St. Louis, the average sunshine in March is 6.4h.

UV index

In St. Louis, the average daily maximum UV index in March is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In March, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the average humidity in March in St. Louis?

The average relative humidity in March in St. Louis is 68.3%.

How much does it rain in St. Louis in March?

In St. Louis, during March, the rain falls for 10.3 days and regularly aggregates up to 3.32" (84.3mm) of precipitation.

How many days does it snow in March in St. Louis?

In St. Louis, during March, snow falls for 1.7 days and regularly aggregates up to 2.3" (58.4mm) of snow.

What is the average length of the day in March in St. Louis?

The average day length in March in St. Louis is 11h and 59min.

What time are sunrise and sunset in March in St. Louis?

In March, on the first day of the month, sunrise is at 6:32 am and sunset at 5:53 pm CST. On the last day of the month, sunrise is at 6:46 am and sunset at 7:23 pm CDT.

When does Daylight Saving Time (DST) start in March in St. Louis?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. DST ends Sunday, November 6. 2022, at 2:00 am.

How long on average sun shines in March in St. Louis?

In St. Louis, the average sunshine duration in March is 6.4h.

What is the UV index intensity in March in St. Louis?

In St. Louis, Missouri, the average daily maximum UV index in March is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average UV index

Average temperature in March
St. Louis, MO

Average temperature in March - St. Louis, MO
  • Average high temperature in March: 55.9°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in March: 36.6°F

The month with the highest average low temperature is July (71°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

[Resources]

Average humidity in March
St. Louis, MO

Average humidity in March - St. Louis, MO
  • Average humidity in March: 68.3%

The month with the highest relative humidity is December (75.8%).
The month with the lowest relative humidity is April (63.5%).

[Resources]

Average rainfall in March
St. Louis, MO

Average rainfall in March - St. Louis, MO
  • Average rainfall in March: 3.3"

The wettest month (with the highest rainfall) is May (4.7").
The driest month (with the least rainfall) is February (2.2").

[Resources]

Average rainfall days in March
St. Louis, MO

Average rainfall days in March - St. Louis, MO
  • Average rainfall days in March: 10.3 days

The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is September (7.4 days).

[Resources]

Average snowfall in March
St. Louis, MO

Average snowfall in March - St. Louis, MO
  • Average snowfall in March: 2.3"

The month with the highest snowfall is January (5.6").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in March
St. Louis, MO

Average snowfall days in March - St. Louis, MO
  • Average snowfall days in March: 1.7 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in March /
Average sunshine in March
St. Louis, MO

Average daylight in March / Average sunshine in March - St. Louis, MO
  • Average daylight in March: 11h and 59min

The month with the longest days is June (Average daylight: 14h and 49min).
The month with the shortest days is December (Average daylight: 9h and 31min).

  • Average sunshine in March: 6h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

[Resources]

Average UV index in March
St. Louis, MO

Average UV index in March - St. Louis, MO
  • Average UV index in March: 5

The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location