July weather forecastDerby, ME
July
Weather in July
July is a warm summer month in Derby, Maine, with an average temperature fluctuating between 77.5°F (25.3°C) and 56.8°F (13.8°C).Temperature
Derby's July weather reaches an average high of 77.5°F (25.3°C) and an average low of 56.8°F (13.8°C), making it the warmest month.Humidity
The average relative humidity in July in Derby, Maine, is 78%.Rainfall
The month with the least rainfall in Derby is July, when the rain falls for 16.6 days and typically collects 1.57" (40mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in July is 15h and 14min.On the first day of the month, sunrise is at 4:52 am and sunset at 8:27 pm. On the last day of July, in Derby, sunrise is at 5:20 am and sunset at 8:04 pm EDT.
Sunshine
The average sunshine in July is 9.5h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 5 during July morphs into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Derby, ME
- Average high temperature in July: 77.5°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in July: 56.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure in July
Derby, ME
- Average pressure in July: 29.92"Hg
The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in July
Derby, ME
- Average wind speed in July: 5.5mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in July
Derby, ME
- Average humidity in July: 78%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (75%).
Average rainfall in July
Derby, ME
- Average rainfall in July: 1.57"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in July
Derby, ME
- Average rainfall days in July: 16.6 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in July
Derby, ME
- Average snowfall in July: 0"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Derby, ME
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Derby, ME
- Average daylight in July: 15h and 12min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in July: 9h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in July
Derby, ME
- Average sunshine days in July: 11.9 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in July
Derby, ME
- Average UV index in July: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in July
Derby, ME
- Average cloud cover in July: 43
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in July
Derby, ME
- Average visibility in July: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
