May weather forecastFort Collins, CO
May
Weather in May
May witnesses a significant rise in warmth and humidity. With the highest temperature soaring to 63.3°F (17.4°C), spring is in full swing in Fort Collins during May. The weather in this month follows a relatively high precipitation trend, recording 1.5" (38mm) of rainfall. Thus, resulting in a lush, green environment. Keep an umbrella handy as the likelihood of rain during May is relatively high.Temperature
The start of May signals a slight increase in the average high-temperature, moving from a fresh 54.5°F (12.5°C) in April to a refreshing 63.3°F (17.4°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 40.6°F (4.8°C) is recorded in Fort Collins, Colorado, during May.Humidity
In Fort Collins, the average relative humidity in May is 56%.Rainfall
May is the month with the most rainfall in Fort Collins. Rain falls for 12.1 days and accumulates 1.5" (38mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Fort Collins. During 1.1 snowfall days, in May, Fort Collins aggregates 1.22" (31mm) of snow. In Fort Collins, during the entire year, snow falls for 21.2 days and aggregates up to 15.98" (406mm) of snow.Daylight
In May, the average length of the day in Fort Collins is 14h and 28min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:31 am and sunset at 8:24 pm MDT.
Sunshine
In Fort Collins, the average sunshine in May is 10.8h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during May translates into the following guidance:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Collins, CO
- Average high temperature in May: 63.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in May: 40.6°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in May
Fort Collins, CO
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Fort Collins, CO
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in May
Fort Collins, CO
- Average humidity in May: 56%
The month with the highest relative humidity is February (67%).
The months with the lowest relative humidity are June, August and September (45%).
Average rainfall in May
Fort Collins, CO
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is January (0.12").
Average rainfall days in May
Fort Collins, CO
- Average rainfall days in May: 12.1 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is January (1.2 days).
Average snowfall in May
Fort Collins, CO
- Average snowfall in May: 1.22"
The month with the highest snowfall is April (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Fort Collins, CO
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Fort Collins, CO
- 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: 10h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in May
Fort Collins, CO
- Average sunshine days in May: 17.1 days
The months with the most sunshine days are January and December (27.5 days).
The month with the least sunshine days is July (14.9 days).
Average UV index in May
Fort Collins, CO
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Fort Collins, CO
- Average cloud cover in May: 27
The months with the most cloud cover are February, April and May (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in May
Fort Collins, 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).
