nomadseason

March Weather in Sullivan, United States

Last updated: June 24, 2025

In Sullivan, United States, the average temperature in March hovers around 8°C (48°F). Expect a wide range with minimums dipping to -16°C (3°F) and maximums peaking at 29°C (84°F). Prepare for occasional rain, as 128 mm (5.1 in) of precipitation typically falls over 12 days. With an average humidity of 80%, the atmosphere tends to feel quite moist.

March Temperature in Sullivan

In March in Sullivan, the average temperature is 8°C (48°F), with maximums reaching up to 29°C (84°F) and minimums dropping as low as -16°C (3°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates March temperature patterns in Sullivan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sullivan, March typically has an average temperature of 8°C (48°F), with highs reaching up to 29°C (84°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556675797572594540
Data source: Temperature data for Sullivan generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Sullivan

In Sullivan in March, the precipitation amount is 128 mm (5.1 in) over the course of 12 days.

March Precipitation Trends in Sullivan

The chart displays monthly precipitation patterns in Sullivan, 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 Sullivan, March typically receives around 128 mm (5.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec768412813216587100127531076856
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Sullivan

In Sullivan in March, humidity is 80%. With an average temperature of 8°C (48°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and travel a bit more arduous as the cool air mixes with the moisture, creating a heavy atmosphere.

March Average Humidity in Sullivan

This chart illustrates the average monthly humidity levels in Sullivan, 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 Sullivan is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Sullivan

In Sullivan 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 Sullivan, you can refer to this Hourly UV Index in Sullivan.

Maximum UV Index Levels in Sullivan for March

The chart shows the monthly maximum UV Index (UVI) for Sullivan 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 Sullivan typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109753
Data source: Sullivan 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 Sullivan Compares to Other Months

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

This table compares monthly weather conditions in Sullivan, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)76 mm (3.0 inches)82%moderate
February Weather2°C (36°F)84 mm (3.3 inches)80%moderate
March Weather8°C (48°F)128 mm (5.1 inches)80%high
April Weather13°C (55°F)132 mm (5.2 inches)80%very high
May Weather19°C (66°F)165 mm (6.5 inches)82%very high
June Weather24°C (76°F)87 mm (3.4 inches)83%extreme
July Weather26°C (79°F)100 mm (3.9 inches)81%extreme
August Weather24°C (76°F)126 mm (5.0 inches)80%very high
September Weather22°C (72°F)53 mm (2.1 inches)76%very high
October Weather15°C (59°F)107 mm (4.2 inches)76%high
November Weather7°C (45°F)68 mm (2.7 inches)85%moderate
December Weather4°C (40°F)56 mm (2.2 inches)86%moderate

Compare Sullivan's Climate with Cities Worldwide