May weather forecastGallatin Gateway, MT
May
Weather in May
May signifies the ramping down of the long Gallatin Gateway winter with snowfall falling to 4.45in. There is a marked change in the weather pattern with daylight hours increasing. The city turns vibrant with blossoms as it welcomes the imminent arrival of Summer. In addition to this, June promises the comfort of long sunny days and mild temperatures.Temperature
As Gallatin Gateway welcomes May, the average high-temperature sees a rise, transitioning from a frosty 43°F (6.1°C) in April to a cool 55°F (12.8°C). Gallatin Gateway experiences a consistent, yet significant, drop from daily highs to a low-temperature of 33.4°F (0.8°C) throughout May.Humidity
In May, the average relative humidity in Gallatin Gateway is 72%.Rainfall
May is the month with the most rainfall. Rain falls for 18.5 days and accumulates 2.83" (72mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Gallatin Gateway, during May, snow falls for 5.7 days and regularly aggregates up to 4.45" (113mm) of snow. In Gallatin Gateway, during the entire year, snow falls for 122.8 days and aggregates up to 91.1" (2314mm) of snow.Daylight
In May, the average length of the day in Gallatin Gateway is 14h and 56min.On the first day of the month, sunrise is at 6:11 am and sunset at 8:32 pm. On the last day of May, sunrise is at 5:39 am and sunset at 9:06 pm MDT.
Sunshine
In Gallatin Gateway, the average sunshine in May is 9.3h.UV index
In Gallatin Gateway, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In May, the maximum UV index of 4 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gallatin Gateway, MT
- Average high temperature in May: 55°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (24.8°F).
- Average low temperature in May: 33.4°F
The months with the highest average low temperature are July and August (46.9°F).
The coldest month (with the lowest average low temperature) is December (10.4°F).
Average pressure in May
Gallatin Gateway, MT
- Average pressure in May: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Gallatin Gateway, MT
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is January (6.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in May
Gallatin Gateway, MT
- Average humidity in May: 72%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is August (51%).
Average rainfall in May
Gallatin Gateway, MT
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is August (1.3").
Average rainfall days in May
Gallatin Gateway, MT
- Average rainfall days in May: 18.5 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in May
Gallatin Gateway, MT
- Average snowfall in May: 4.45"
The month with the highest snowfall is February (15.51").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Gallatin Gateway, MT
- Average snowfall days in May: 5.7 days
The month with the highest number of snowfall days is February (20.3 days).
The month with the least snowfall days is July (0 days).
Average daylight in May /
Average sunshine in May
Gallatin Gateway, MT
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in May
Gallatin Gateway, MT
- Average sunshine days in May: 8.2 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is April (7 days).
Average UV index in May
Gallatin Gateway, 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 January, February, March, November and December (UV index 1).
Average cloud cover in May
Gallatin Gateway, MT
- Average cloud cover in May: 41
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in May
Gallatin Gateway, MT
- Average visibility in May: 5mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
