Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May showcases a minor temperature ascent, adjusting from April's enjoyable 67.1°F (19.5°C) to a moderately hot 75.9°F (24.4°C). Galena, in May, experiences an average temperature of 56.1°F (13.4°C) at night.Humidity
The most humid month is May, with an average relative humidity of 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 5.16" (131mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Galena aggregates 0.24" (6mm) of snow. Throughout the year, there are 18.4 snowfall days, and 7.72" (196mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 9min.On the first day of May, sunrise is at 6:18 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:27 pm CDT.
Sunshine
In May, the average sunshine is 9h.UV index
In Galena, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 6 during May translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May in Galena?
What is the wettest month?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Galena have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Galena have in May?
What is the UV index reading in May?
Average temperature in May
Galena, MO
- Average high temperature in May: 75.9°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in May: 56.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in May
Galena, MO
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Galena, MO
- Average wind speed in May: 7.9mph
The windiest months (with the highest average wind speed) are February, March and April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in May
Galena, MO
- Average humidity in May: 78%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall in May
Galena, MO
- Average rainfall in May: 5.16"
The wettest month (with the highest rainfall) is May (5.16").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in May
Galena, MO
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in May
Galena, MO
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Galena, MO
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Galena, MO
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in May
Galena, MO
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in May
Galena, MO
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in May
Galena, MO
- Average cloud cover in May: 39
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Galena, MO
- 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).
Galena, Missouri, USA
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