Peoria, IL weather in May
Peoria is mild in May, with frequent rain: highs average 74°F and nights drop to about 53°F. Rain falls on about 13 days.
- Normal high
- 74°F
- Normal low
- 53°F
- Wet days
- 13
- 4.7 in total
- Muggy days
- 3
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 69°F | 79°F |
| Normal low | 48°F | 58°F |
| Chance of a wet day | 41% | 38% |
| Sunrise / sunset | 5:56 am / 7:54 pm | 5:29 am / 8:22 pm |
| Daylight | 13.9 h | 14.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical May day
- 6 am56°Fdew point 50°F
- 9 am64°Fdew point 52°F
- Noon69°Fdew point 52°F
- 3 pm71°Fdew point 52°F
- 6 pm69°Fdew point 51°F
- 9 pm62°Fdew point 52°F
NOAA hourly normals (local standard time) from Peoria Gtr Peoria Airport (5 mi away); average wind 8 mph; clear or few clouds in 54% of daytime hours, mostly cloudy or overcast in 36%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more3 of 31
- Wet daysat least 0.01 in of rain or melted snow13 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 4.7 in; a dry May brings about 2.7 in and a wet one about 5.8 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20202018: average high 83°F
- Coolest May1997: average high 68°F
- Wettest May2013: 10.4 in
- Driest May2005: 0.7 in
- Highest reading97°F (May 27, 2018)
- Lowest reading28°F (May 3, 2005)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 64°F | 74°F | 83°F |
| Normal low | 42°F | 53°F | 62°F |
| Wet days | 12 | 13 | 11 |
| Comfortable days | 11 | 14 | 7 |
| Daylight | 13.3 h | 14.5 h | 15.0 h |
Highs change by +10°F from April and +9°F into June.
Nearby alternatives in May
- Cooler: Madison, WI165 mi · high 69°F · 13 wet days
How Peoria ranks in May
- Normal high203rd warmest of 378 cities; 2nd of 8 in Illinois
- Wet days300th driest of 378
- Comfortable days142nd most of 339
What to pack for Peoria in May
- A rain jacket or umbrella – rain on about 13 days
Heating and cooling
May has 135 heating degree days and 88 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Peoria in May?
The normal high is 74°F and the normal low is 53°F. From 1991 to 2020 the hottest May reading was 97°F (May 27, 2018).
Does it rain a lot in Peoria in May?
About 13 days in May have at least 0.01 in of precipitation, and the normal total is 4.7 in. The wettest May in 1991-2020 was in 2013 (10.4 in); the driest was in 2005 (0.7 in).
Is May a good time to visit Peoria?
May ranks 1st of 12 months on our comfort score for Peoria (69 out of 100). It has about 14 comfortable days and about 1 day at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Peoria Gtr Peoria Airport (USW00014842), 5.3 mi WSW of the city center, 650 ft (148 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Greater Peoria Regional Airport (725320-14842), 5.3 mi WSW of the city center, 655 ft (153 ft higher than the city). Hourly observations, 1991-2020.