Climateby Month

Springfield, IL weather in May

NOAA 1991-2020 normals and daily records · Springfield all year

In May, Springfield sees highs around 76°F and lows around 54°F: mild, with frequent rain. There are about 13 days with rain.

Normal high
76°F
Normal low
54°F
Wet days
13
4.5 in total
Muggy days
3
dew point 65°F+

How May changes from start to finish

Normal values at the start and end of May
May 1May 31
Normal high71°F80°F
Normal low49°F59°F
Chance of a wet day42%38%
Sunrise / sunset5:58 am / 7:52 pm5:32 am / 8:19 pm
Daylight13.9 h14.8 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

  1. 6 am58°Fdew point 52°F
  2. 9 am66°Fdew point 53°F
  3. Noon71°Fdew point 53°F
  4. 3 pm73°Fdew point 52°F
  5. 6 pm70°Fdew point 52°F
  6. 9 pm63°Fdew point 53°F

NOAA hourly normals (local standard time) from Springfield Capital Airport (4 mi away); average wind 9 mph; clear or few clouds in 57% of daytime hours, mostly cloudy or overcast in 33%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F13 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 4.5 in; a dry May brings about 2.9 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 87°F
  • Coolest May1997: average high 70°F
  • Wettest May2013: 10.9 in
  • Driest May1992: 0.5 in
  • Highest reading98°F (May 28, 2018)
  • Lowest reading30°F (May 4, 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

AprilMayJune
Normal high66°F76°F84°F
Normal low43°F54°F63°F
Wet days121311
Comfortable days13136
Daylight13.3 h14.4 h14.9 h

Highs change by +10°F from April and +8°F into June.

Nearby alternatives in May

How Springfield ranks in May

  • Normal high184th warmest of 378 cities; 1st of 8 in Illinois
  • Wet days309th driest of 378
  • Comfortable days173rd most of 339

What to pack for Springfield in May

  • A rain jacket or umbrella – rain on about 13 days
  • Sunglasses and sunscreen – about 14.4 hours of daylight and highs near 76°F

Heating and cooling

May has 111 heating degree days and 112 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is Springfield in May?

The normal high is 76°F and the normal low is 54°F. From 1991 to 2020 the hottest May reading was 98°F (May 28, 2018).

Does it rain a lot in Springfield in May?

About 13 days in May have at least 0.01 in of precipitation, and the normal total is 4.5 in. The wettest May in 1991-2020 was in 2013 (10.9 in); the driest was in 1992 (0.5 in).

Is May a good time to visit Springfield?

May ranks 1st of 12 months on our comfort score for Springfield (68 out of 100). It has about 13 comfortable days and about 1 day at 90°F or hotter. The best months are April and May.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Springfield Capital Airport (USW00093822), 3.7 mi NW of the city center, 594 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Abraham Lincoln Capital Airport (724390-93822), 3.7 mi NW of the city center, 590 ft . Hourly observations, 1991-2020.