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
The arrival of May signals an increase in the average high-temperature, moving from a fresh 53.1°F (11.7°C) in April to a comfortable 65.8°F (18.8°C). Sinai encounters a steady low-temperature average of 48.4°F (9.1°C) throughout the month of May.Humidity
The average relative humidity in May is 70%.Rainfall
In May, in Sinai, the rain falls for 16.4 days. Throughout May, 2.72" (69mm) of precipitation is accumulated. Throughout the year, there are 125.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sinai are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Sinai aggregates 0.16" (4mm) of snow. In Sinai, during the entire year, snow falls for 61.5 days and aggregates up to 21.38" (543mm) of snow.Daylight
In May, the average length of the day in Sinai is 14h and 48min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:32 pm. On the last day of May, sunrise is at 5:47 am and sunset at 9:04 pm CDT.
Sunshine
In May, the average sunshine is 8.8h.UV index
In Sinai, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Always opt for UVA and UVB-resistant sunglasses on radiant days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Sinai?
What is the average humidity in May in Sinai?
How much does it rain in Sinai in May?
What is the last month it snows in Sinai?
What is the average length of the day in May in Sinai?
When is the sunrise / sunset in May in Sinai?
How many hours of sunshine does Sinai have in May?
What is the UV index reading in May in Sinai?
Average temperature in May
Sinai, SD
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in May: 48.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in May
Sinai, SD
- Average pressure in May: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Sinai, SD
- Average wind speed in May: 10.1mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in May
Sinai, SD
- Average humidity in May: 70%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Sinai, SD
- Average rainfall in May: 2.72"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in May
Sinai, SD
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in May
Sinai, SD
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sinai, SD
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sinai, SD
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Sinai, SD
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in May
Sinai, SD
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Sinai, SD
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in May
Sinai, SD
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Sinai, South Dakota, USA
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