Weather in May
Temperature
May marks a rise in the average high-temperature, moving from April's mild 55.8°F (13.2°C) to an enjoyable 67.6°F (19.8°C). In May, a remarkable difference from daytime highs is noted, as Niagara Falls records an average temperature of 45.1°F (7.3°C) during the night.Rainfall
In Niagara Falls, during May, the rain falls for 12.8 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, in Niagara Falls, there are 158.7 rainfall days, and 34.96" (888mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Niagara Falls is 14h and 41min.On the first day of May, sunrise is at 6:08 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:48 pm EDT.
Sunshine
The average sunshine in May is 8h.UV index
The average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 7 in May interprets into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in May
Niagara Falls, NY
- Average high temperature in May: 67.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.1°F).
- Average low temperature in May: 45.2°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average rainfall in May
Niagara Falls, NY
- Average rainfall in May: 3.1"
The wettest months (with the highest rainfall) are September and November (3.4").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in May
Niagara Falls, NY
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is January (19.2 days).
The month with the least rainy days is August (9.8 days).
Average snowfall in May
Niagara Falls, NY
- Average snowfall in May: 0"
The month with the highest snowfall is January (23.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Niagara Falls, NY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Niagara Falls, NY
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h
The months with the most sunshine are June and July (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 2h).
Average UV index in May
Niagara Falls, NY
- Average UV index in May: 7
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).
Niagara Falls, New York, USA
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