May weather forecastLittleton, CO
May
Weather in May
May is the harbinger of summer in Littleton, Colorado, with temperatures consistently hovering around high averages of 67.5°F (19.7°C) which delineates a clear shift from winter to summer. Nonetheless, the month is marked by high chances of rainfall, accumulating upto 2.05" (52mm). The month carries forth the characteristic colorfulness and chirpiness of spring along with the steady warmth of the upcoming summer. With longer daylights hours reaching up to 14.4 hours and the complete dissipation of snow, May sets the stage for the hotter months ahead.Temperature
With the start of May, the average high-temperature marginally shifts from April's moderate 58.6°F (14.8°C) to a still refreshing 67.5°F (19.7°C). Littleton anticipates a considerable drop in temperature at night in May, with an average low of 43.2°F (6.2°C).Humidity
The average relative humidity in May in Littleton is 51%.Rainfall
The month with the most rainfall is May, when the rain falls for 15.8 days and typically aggregates up to 2.05" (52mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.7 snowfall days, in May, Littleton aggregates 2.6" (66mm) of snow. In Littleton, during the entire year, snow falls for 42.7 days and aggregates up to 34.92" (887mm) of snow.Daylight
In Littleton, the average length of the day in May is 14h and 23min.On the first day of the month, sunrise is at 5:59 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:21 pm MDT.
Sunshine
In May, the average sunshine is 11.3h.UV index
In Littleton, Colorado, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In May, a regular UV index of 5 translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Littleton, CO
- Average high temperature in May: 67.5°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (41°F).
- Average low temperature in May: 43.2°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in May
Littleton, CO
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed in May
Littleton, CO
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is September (6mph).
Average humidity in May
Littleton, CO
- Average humidity in May: 51%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (41%).
Average rainfall in May
Littleton, CO
- Average rainfall in May: 2.05"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Littleton, CO
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (3 days).
Average snowfall in May
Littleton, CO
- Average snowfall in May: 2.6"
The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Littleton, CO
- Average snowfall days in May: 1.7 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Littleton, CO
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 11h and 18min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in May
Littleton, CO
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (10 days).
Average UV index in May
Littleton, CO
- 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, November and December (UV index 2).
Average cloud cover in May
Littleton, CO
- Average cloud cover in May: 25
The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in May
Littleton, CO
- 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).
