March Weather in Fairfield, United States

Last updated: June 24, 2025

In Fairfield, United States, the average temperature in March hovers around 4°C (40°F). Prepare for a range of conditions, as temperatures can dip to a chilly -11°C (13°F) or climb to a comfortable 23°C (73°F). Expect 99 mm (3.9 in) of precipitation spread over approximately 10 days, and be ready for a rather humid atmosphere with an average humidity of 81%.

March Temperature in Fairfield

In March in Fairfield, the average temperature is 4°C (40°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -11°C (13°F). This varying climate makes it essential for travelers to pack both warm and light clothing to comfortably enjoy their visit.

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 4°C (40°F), with highs reaching up to 23°C (73°F) and lows dropping to around -11°C (13°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 total precipitation amount is 99 mm (3.9 in) spread over a period of 10 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 99 mm (3.9 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Fairfield

In Fairfield in March humidity is 81%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that can make traveling quite uncomfortable, as the cold air clings uncomfortably to your skin and the moisture can quickly sap your body heat.

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	0°C (33°F)	77 mm (3.0 inches)	84%	moderate
February Weather	1°C (35°F)	114 mm (4.5 inches)	82%	moderate
March Weather	4°C (40°F)	99 mm (3.9 inches)	81%	high
April Weather	9°C (49°F)	135 mm (5.3 inches)	78%	very high
May Weather	15°C (59°F)	119 mm (4.7 inches)	69%	very high
June Weather	20°C (69°F)	95 mm (3.7 inches)	69%	very high
July Weather	24°C (76°F)	132 mm (5.2 inches)	62%	very high
August Weather	23°C (74°F)	102 mm (4.0 inches)	65%	very high
September Weather	20°C (68°F)	105 mm (4.1 inches)	68%	very high
October Weather	15°C (59°F)	152 mm (6.0 inches)	74%	high
November Weather	7°C (46°F)	100 mm (4.0 inches)	82%	moderate
December Weather	3°C (37°F)	135 mm (5.3 inches)	80%	low