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March Weather in Johnstown, United States

Last updated: June 24, 2025

In March, the average temperature in Johnstown, United States hovers around 4°C (39°F), with a remarkable temperature range that can drop to a chilling -16°C (4°F) or rise to a pleasant 21°C (70°F). Expect 114 mm (4.5 in) of precipitation over approximately 15 days, contributing to an elevated average humidity of 89%. Stay prepared for a diverse and damp climate!

March Temperature in Johnstown

In March in Johnstown, the average temperature is 4°C (39°F). The maximum can reach 21°C (70°F), while the minimum can drop to as low as -16°C (4°F). Be prepared for a wide range of temperatures when traveling to Johnstown during this time.

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

The chart illustrates March temperature patterns in Johnstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnstown, March typically has an average temperature of 4°C (39°F), with highs reaching up to 21°C (70°F) and lows dropping to around -16°C (4°F).
JanFebMarAprMayJunJulAugSepOctNovDec283238485967727064543933
Data source: Temperature data for Johnstown generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Johnstown

In Johnstown in March, the precipitation amount is 114 mm (4.5 in) spread over a duration of 15 days.

March Precipitation Trends in Johnstown

The chart displays monthly precipitation patterns in Johnstown, 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 Johnstown, March typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec911311141331521451219812611591115
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Johnstown

In Johnstown in March humidity is 89%. With an average temperature of 4°C (39°F), this humidity feels like an uninviting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers of clothing to fend off the dampness.

March Average Humidity in Johnstown

This chart illustrates the average monthly humidity levels in Johnstown, 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 Johnstown is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Johnstown

In Johnstown in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Johnstown.

Maximum UV Index Levels in Johnstown for March

The chart shows the monthly maximum UV Index (UVI) for Johnstown 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 Johnstown typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Johnstown 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 Johnstown Compares to Other Months

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

This table compares monthly weather conditions in Johnstown, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)91 mm (3.6 inches)89%moderate
February Weather0°C (33°F)131 mm (5.1 inches)90%moderate
March Weather4°C (39°F)114 mm (4.5 inches)89%high
April Weather9°C (49°F)133 mm (5.2 inches)88%very high
May Weather15°C (60°F)152 mm (6.0 inches)80%very high
June Weather19°C (67°F)145 mm (5.7 inches)79%very high
July Weather22°C (72°F)121 mm (4.8 inches)74%very high
August Weather21°C (70°F)98 mm (3.9 inches)64%very high
September Weather18°C (65°F)126 mm (5.0 inches)67%very high
October Weather12°C (55°F)115 mm (4.5 inches)81%high
November Weather4°C (40°F)91 mm (3.6 inches)89%moderate
December Weather1°C (34°F)115 mm (4.5 inches)88%low

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