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
Rockford's transition into May is marked by a rise in the average high-temperature, advancing from a refreshing 59.2°F (15.1°C) in April to a pleasant 70.7°F (21.5°C). Nighttime temperature lowers to an average of 54°F (12.2°C) in May.Humidity
In Rockford, Indiana, the average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 14 days and accumulates 1.22" (31mm) of precipitation.Snowfall
In Rockford, snow does not fall in May through September.Daylight
In May, the average length of the day is 14h and 28min.On the first day of May, sunrise is at 6:38 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 9:06 pm EDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Rockford have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Rockford, IN
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in May
Rockford, IN
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Rockford, IN
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Rockford, IN
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Rockford, IN
- Average rainfall in May: 1.22"
The wettest month (with the highest rainfall) is May (1.22").
The driest months (with the least rainfall) are February and November (0.51").
Average rainfall days in May
Rockford, IN
- Average rainfall days in May: 14 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in May
Rockford, IN
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Rockford, IN
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rockford, IN
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Rockford, IN
- Average sunshine days in May: 13.1 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in May
Rockford, IN
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Rockford, IN
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in May
Rockford, IN
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Rockford, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location