May weather forecastCallahan, FL
May
Weather in May
The last month of the spring, May, is also a moderately hot month in Callahan, Florida, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 85.1°F (29.5°C).Temperature
May's onset brings a minor rise in the average high-temperature, moving from 79.7°F (26.5°C) in April to a still warm 85.1°F (29.5°C). Callahan encounters a steady low-temperature average of 67.6°F (19.8°C) throughout the month of May.Heat index
The heat index value for May is calculated to be a tropical 93.2°F (34°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
The average relative humidity in May is 71%.Rainfall
In Callahan, in May, it is raining for 13 days, with typically 2.2" (56mm) of accumulated precipitation. In Callahan, during the entire year, the rain falls for 165.4 days and collects up to 28.39" (721mm) of precipitation.Snowfall
In Callahan, snow does not fall in March through December.Daylight
In Callahan, the average length of the day in May is 13h and 43min.On the first day of the month, sunrise is at 6:42 am and sunset at 8:05 pm. On the last day of May, sunrise is at 6:25 am and sunset at 8:24 pm EDT.
Sunshine
In Callahan, Florida, the average sunshine in May is 10.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In May, an average UV index of 7 transforms into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Callahan, FL
- Average high temperature in May: 85.1°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (63°F).
- Average low temperature in May: 67.6°F
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (46.8°F).
Average pressure in May
Callahan, FL
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in May
Callahan, FL
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in May
Callahan, FL
- Average humidity in May: 71%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (70%).
Average rainfall in May
Callahan, FL
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in May
Callahan, FL
- Average rainfall days in May: 13 days
The month with the highest number of rainy days is August (22.6 days).
The month with the least rainy days is November (8.7 days).
Average snowfall days in May
Callahan, FL
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Callahan, FL
- Average daylight in May: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in May: 10h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Callahan, FL
- Average sunshine days in May: 16.8 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in May
Callahan, FL
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in May
Callahan, FL
- Average cloud cover in May: 28
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is May (Cloud cover 28).
Average visibility in May
Callahan, FL
- 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).
