May weather forecast
Brighton, CO

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Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado
Trees on partly frozen lake water in Barr Lake State Park in Brighton, Colorado

Weather in May

May sees the proper advent of spring in Brighton, with warmer temperatures becoming the norm. One notable change is the increased amount of sunshine Brighton experiences during this month. The weather encourages outdoor activities with rainfall dropping to 0.98" (25mm) from the April showers. The end of spring season lends an idyllic touch to the city. May shows why Brighton's weather is admired for its comfortable temperatures and generous sunlight.

Temperature

As April gives way to May, the average high-temperature in Brighton, Colorado, displays a slight ascent, adjusting from a refreshing 61.3°F (16.3°C) to an agreeable 69.4°F (20.8°C). A noteworthy thermal contrast characterizes Brighton's May nights, with temperatures averaging at a frosty 44.4°F (6.9°C).

Humidity

In May, the average relative humidity is 52%.

Rainfall

May is the month with the most rainfall. Rain falls for 10.8 days and accumulates 0.98" (25mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1 snowfall days, in May, Brighton aggregates 1.26" (32mm) of snow. In Brighton, during the entire year, snow falls for 30.9 days and aggregates up to 11.42" (290mm) of snow.

Daylight

The average length of the day in May in Brighton is 14h and 25min.
On the first day of the month, sunrise is at 5:58 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:21 pm MDT.

Sunshine

In Brighton, the average sunshine in May is 11h.

UV index

In Brighton, Colorado, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To protect against the Sun's most potent rays, avoid direct exposure around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What are May temperatures in Brighton?

In Brighton, 69.4°F (20.8°C) is the average high-temperature and 44.4°F (6.9°C) is the average low-temperature during May.

What is the average humidity in May in Brighton?

The average relative humidity in May is 52%.

What is the wettest month in Brighton?

The month with the most rainfall in Brighton is May, when the rain falls for 10.8 days and typically aggregates up to 0.98" (25mm) of precipitation.

How much does it rain in Brighton in May?

In Brighton, during May, the rain falls for 10.8 days and regularly aggregates up to 0.98" (25mm) of precipitation.

What is the last month it snows in Brighton?

May is the last month it regularly snows in Brighton. During 1 snowfall days, in May, Brighton aggregates 1.26" (32mm) of snow.

What is the average length of the day in May in Brighton?

In May, the average day length in Brighton is 14h and 25min.

When is the sunrise / sunset in May in Brighton?

On the first day of May, sunrise is at 5:58 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:21 pm MDT.

How many hours of sunshine does Brighton have in May?

In May, the average sunshine duration is 11h.

What is the UV index intensity in May in Brighton?

In Brighton, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Brighton, CO

Average temperature in May - Brighton, CO
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (40.8°F).

  • Average low temperature in May: 44.4°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in May
Brighton, CO

Average pressure in May - Brighton, CO
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Brighton, CO

Average wind speed in May - Brighton, CO
  • Average wind speed in May: 6.7mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).

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Average humidity in May
Brighton, CO

Average humidity in May - Brighton, CO
  • Average humidity in May: 52%

The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in May
Brighton, CO

Average rainfall in May - Brighton, CO
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is December (0.12").

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Average rainfall days in May
Brighton, CO

Average rainfall days in May - Brighton, CO
  • Average rainfall days in May: 10.8 days

The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (2.6 days).

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Average snowfall in May
Brighton, CO

Average snowfall in May - Brighton, CO
  • Average snowfall in May: 1.26"

The month with the highest snowfall is February (1.89").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Brighton, CO

Average snowfall days in May - Brighton, CO
  • Average snowfall days in May: 1 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Brighton, CO

Average daylight in May / Average sunshine in May - Brighton, CO
  • Average daylight in May: 14h and 2min

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 24min).

  • Average sunshine in May: 11h and 0min

The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

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Average sunshine days in May
Brighton, CO

Average sunshine days in May - Brighton, CO
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in May
Brighton, CO

Average UV index in May - Brighton, 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).

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Average cloud cover in May
Brighton, CO

Average cloud cover in May - Brighton, CO
  • Average cloud cover in May: 26

The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are June, August and September (Cloud cover 16).

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Average visibility in May
Brighton, CO

Average visibility in May - Brighton, 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).

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Brighton, Colorado, USA

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