March Weather in Fairfield, United States

Last updated: June 24, 2025

In March, the average temperature in Fairfield, United States hovers around 5°C (42°F). Expect a chilly range, with minimums plunging to -19°C (-1°F) and maximums reaching a mild 23°C (74°F). This month also brings about 91 mm (3.6 in) of precipitation spread over 11 days, contributing to an average humidity of 81%.

March Temperature in Fairfield

In March in Fairfield, the average temperature is 5°C (42°F), with maximums that can reach 23°C (74°F) and minimums that can drop as low as -19°C (-1°F). Travelers should be prepared for a wide range of temperatures, making layers an essential part of their packing list.

March Weather in Fairfield: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Fairfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairfield, March typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -19°C (-1°F).

Data source: Temperature data for Fairfield generated using information from the Copernicus Climate Change Service.

March Precipitation in Fairfield

In Fairfield in March, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

March Precipitation Trends in Fairfield

The chart displays monthly precipitation patterns in Fairfield, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Fairfield, March typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Fairfield

In Fairfield in March, humidity is 81%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures feel more daunting and travel less invigorating.

March Average Humidity in Fairfield

This chart illustrates the average monthly humidity levels in Fairfield, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Fairfield is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Fairfield

In Fairfield in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Fairfield, you can refer to this Hourly UV Index in Fairfield.

Maximum UV Index Levels in Fairfield for March

The chart shows the monthly maximum UV Index (UVI) for Fairfield in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Fairfield typically reaches 6, which falls under the high exposure category.

Data source: Fairfield March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How March Weather in Fairfield Compares to Other Months

Weather in Fairfield varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Fairfield, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Fairfield, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	52 mm (2.0 inches)	81%	moderate
February Weather	-3°C (27°F)	55 mm (2.2 inches)	81%	moderate
March Weather	5°C (42°F)	91 mm (3.6 inches)	81%	high
April Weather	10°C (51°F)	83 mm (3.3 inches)	82%	very high
May Weather	18°C (64°F)	160 mm (6.3 inches)	78%	very high
June Weather	24°C (75°F)	133 mm (5.2 inches)	81%	extreme
July Weather	25°C (78°F)	70 mm (2.8 inches)	79%	very high
August Weather	24°C (75°F)	73 mm (2.9 inches)	77%	very high
September Weather	21°C (69°F)	121 mm (4.8 inches)	78%	very high
October Weather	12°C (54°F)	124 mm (4.9 inches)	78%	high
November Weather	4°C (40°F)	52 mm (2.0 inches)	87%	moderate
December Weather	0°C (33°F)	43 mm (1.7 inches)	84%	moderate