St. Louis
Missouri, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
St. Louis, MO

A beautiful twilight view of the Gateway Arch in St. Louis, Missouri, with a distant view of the city buildings mirrored in the waterfront
A beautiful twilight view of the Gateway Arch in St. Louis, Missouri, with a distant view of the city buildings mirrored in the waterfront
The first month of the spring, Marzo, is a mild month in St. Louis, Missouri, with average temperature ranging between min 36.7°F (2.6°C) and max 55.9°F (13.3°C).

Temperature

In St. Louis, the average high-temperature in Marzo increases, from a chilly 45°F (7.2°C) in Febrero, to a mild 55.9°F (13.3°C). The average low-temperature, in Marzo, in St. Louis, is 36.7°F (2.6°C).

Humidity

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

Rainfall

In St. Louis, in Marzo, during 10.3 rainfall days, 3.32" (84.3mm) of precipitation is typically accumulated. Throughout the year, in St. Louis, there are 112.6 rainfall days, and 40.96" (1040.3mm) of precipitation is accumulated.

Snowfall

Enero through Abril, Noviembre and Diciembre are months with snowfall in St. Louis. In St. Louis, snow falls for 1.7 days, with typically accumulated 2.3" (58.4mm) of snow. In St. Louis, Missouri, during the entire year, snow falls for 14.5 days, and aggregates up to 17.7" (449.6mm) of snow.

Daylight

In St. Louis, Missouri, the average length of the day in Marzo is 12h.

Sunshine

In St. Louis, Missouri, the average sunshine is 6.4h.

UV index

In St. Louis, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in Marzo in St. Louis?

In St. Louis, Missouri, in Marzo, the average high-temperature is 55.9°F (13.3°C), and the average low-temperature is 36.7°F (2.6°C).

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

The average relative humidity in Marzo in St. Louis, Missouri, is 68.3%.

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

In St. Louis, in Marzo, during 10.3 rainfall days, 3.32" (84.3mm) of precipitation is typically accumulated.

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

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

How many hours of daylight does St. Louis have in Marzo?

In St. Louis, the average length of the day in Marzo is 12h.

How many hours of sunshine does St. Louis have in Marzo?

The average sunshine in Marzo in St. Louis, Missouri, is 6.4h.

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

In St. Louis, the average daily maximum UV index in Marzo is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.
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).

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%).

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 lowest rainfall) is February (2.2").

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 lowest number of rainy days is September (7.4 days).

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

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

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).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in March / Average sunshine in March - St. Louis, MO
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in March: 6.4h

The month with most sunshine is July (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 4.2h).

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

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