May weather forecastRahway, NJ

May
Weather in May
May, the last month of the spring in Rahway, is an agreeable month, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 68.2°F (20.1°C).Temperature
Rahway, New Jersey, sees a rise in temperature during May, with average high-temperatures transitioning from a moderate 58.3°F (14.6°C) in April to a pleasant 68.2°F (20.1°C). An average low-temperature of 54°F (12.2°C) is noted during the month of May.Humidity
The average relative humidity in May is 76%.Rainfall
In Rahway, in May, it is raining for 12.2 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 110.2 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Rahway, New Jersey, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:53 pm. On the last day of May, in Rahway, sunrise is at 5:28 am and sunset at 8:21 pm EDT.
Sunshine
In May, the average sunshine in Rahway is 8.8h.UV index
In Rahway, New Jersey, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rahway, NJ
- Average high temperature in May: 68.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Rahway, NJ
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Rahway, NJ
- Average wind speed in May: 7.5mph
The windiest months (with the highest average wind speed) are January and March (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in May
Rahway, NJ
- Average humidity in May: 76%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (72%).
Average rainfall in May
Rahway, NJ
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in May
Rahway, NJ
- Average rainfall days in May: 12.2 days
The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in May
Rahway, NJ
- Average snowfall in May: 0"
The month with the highest snowfall is March (0.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Rahway, NJ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.2 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
Rahway, NJ
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Rahway, NJ
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in May
Rahway, NJ
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Rahway, NJ
- Average cloud cover in May: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in May
Rahway, NJ
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





