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
Hamilton's May weather brings a rise in high-temperatures, moving from a frosty 43.5°F (6.4°C) in April to a moderate 56.7°F (13.7°C). In Hamilton, the nighttime temperature registers a significant drop from daytime peaks to an average of 33.4°F (0.8°C) in May.Humidity
The average relative humidity in May is 71%.Rainfall
In Hamilton, in May, it is raining for 19.5 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, there are 163.6 rainfall days, and 20.83" (529mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 2.3 snowfall days, in May, Hamilton aggregates 0.67" (17mm) of snow. In Hamilton, during the entire year, snow falls for 101.1 days and aggregates up to 59.17" (1503mm) of snow.Daylight
The average length of the day in May is 15h and 1min.On the first day of the month, sunrise is at 6:21 am and sunset at 8:45 pm. On the last day of May, sunrise is at 5:48 am and sunset at 9:20 pm MDT.
Sunshine
In May, the average sunshine in Hamilton is 10.4h.UV index
In Hamilton, Montana, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 during May translates into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hamilton in May?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Hamilton have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Hamilton have in May?
How high is the UV index in May?
Average temperature in May
Hamilton, MT
- Average high temperature in May: 56.7°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in May: 33.4°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in May
Hamilton, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Hamilton, MT
- Average wind speed in May: 4.5mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Hamilton, MT
- Average humidity in May: 71%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
Hamilton, MT
- Average rainfall in May: 1.97"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in May
Hamilton, MT
- Average rainfall days in May: 19.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in May
Hamilton, MT
- Average snowfall in May: 0.67"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Hamilton, MT
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Hamilton, MT
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in May
Hamilton, MT
- Average sunshine days in May: 8.5 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in May
Hamilton, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Hamilton, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Hamilton, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Hamilton, Montana, USA
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