Elgin weather in May: Elgin, Illinois: normal highs, lows, rain and records for May
Elgin in May has a normal high of 70°F and a normal low of 48°F, a daily mean of 59°F, rising from 65°F on the 1st to 76°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 5.12 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 9°C, 130 mm of precipitation in May.
- NOAA stationElgin
- Station IDUSC00112736
- Location42.06°N 88.29°W
- Elevation763 ft (233 m)
- From the center3 miles
- Population114,701
- Jan 30° 14°
- Feb 34° 17°
- Mar 46° 26°
- Apr 59° 37°
- May 70° 48°
- Jun 80° 58°
- Jul 84° 63°
- Aug 82° 61°
- Sep 76° 53°
- Oct 63° 41°
- Nov 48° 30°
- Dec 36° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Elgin in May?
The normal high is 70°F and the normal low 48°F, for a daily mean of 59.3°F. May is 11.4°F warmer than April and 9.9°F cooler than June. May is the 5th warmest month of the year in Elgin and the wettest. Across the month the normal high rises 11°F, from 65°F on May 1 to 76°F on May 31. From one year to the next May's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Mays in three average between 56°F and 63°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 65°F | 43°F | 43% | 27% |
| May 8 | 68°F | 46°F | 43% | 27% |
| May 15 | 70°F | 48°F | 42% | 27% |
| May 22 | 72°F | 50°F | 41% | 27% |
| May 31 | 76°F | 54°F | 40% | 27% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 65°F | 43°F | 43% | 27% | 14 h |
| May 2 | 65°F | 43°F | 43% | 27% | 14 h |
| May 3 | 66°F | 44°F | 43% | 27% | 14 h 10 min |
| May 4 | 66°F | 44°F | 43% | 27% | 14 h 10 min |
| May 5 | 66°F | 44°F | 43% | 27% | 14 h 10 min |
| May 6 | 67°F | 45°F | 43% | 27% | 14 h 10 min |
| May 7 | 67°F | 45°F | 43% | 27% | 14 h 10 min |
| May 8 | 68°F | 46°F | 43% | 27% | 14 h 20 min |
| May 9 | 68°F | 46°F | 43% | 27% | 14 h 20 min |
| May 10 | 68°F | 46°F | 43% | 27% | 14 h 20 min |
| May 11 | 69°F | 47°F | 43% | 27% | 14 h 20 min |
| May 12 | 69°F | 47°F | 43% | 27% | 14 h 30 min |
| May 13 | 69°F | 47°F | 43% | 27% | 14 h 30 min |
| May 14 | 70°F | 48°F | 42% | 27% | 14 h 30 min |
| May 15 | 70°F | 48°F | 42% | 27% | 14 h 30 min |
| May 16 | 70°F | 48°F | 42% | 27% | 14 h 30 min |
| May 17 | 71°F | 49°F | 42% | 27% | 14 h 40 min |
| May 18 | 71°F | 49°F | 42% | 27% | 14 h 40 min |
| May 19 | 71°F | 49°F | 42% | 27% | 14 h 40 min |
| May 20 | 72°F | 50°F | 42% | 27% | 14 h 40 min |
| May 21 | 72°F | 50°F | 41% | 27% | 14 h 40 min |
| May 22 | 72°F | 50°F | 41% | 27% | 14 h 50 min |
| May 23 | 73°F | 51°F | 41% | 27% | 14 h 50 min |
| May 24 | 73°F | 51°F | 41% | 27% | 14 h 50 min |
| May 25 | 74°F | 51°F | 41% | 27% | 14 h 50 min |
| May 26 | 74°F | 52°F | 41% | 27% | 14 h 50 min |
| May 27 | 74°F | 52°F | 40% | 27% | 14 h 50 min |
| May 28 | 75°F | 53°F | 40% | 27% | 15 h |
| May 29 | 75°F | 53°F | 40% | 27% | 15 h |
| May 30 | 75°F | 53°F | 40% | 27% | 15 h |
| May 31 | 76°F | 54°F | 40% | 27% | 15 h |
- Normal high
- 70°FMay average
- Normal low
- 48°FMay average
- Precipitation
- 5.12 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 16
- Days at 80°F or more
- 7
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00112736; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Elgin in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 8 (43%). In all, 5.12 in falls on 13 days of a normal May, 2 of them with an inch or more.
In a normal May in Elgin, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00112736.
What are the records for May in Elgin?
The warmest May temperature on this station's record (since 1983) is 97°F, on May 28, 2018; the coldest is 28°F, on May 3, 2004. The wettest May brought 9.79 in (2018).
The May mean against the 1991-2020 normal of 59.3°F: 2021 57.8°F (−1.5), 2022 62.4°F (+3.1), 2023 59.6°F (+0.3), 2024 63.0°F (+3.8), 2025 57.5°F (−1.8), 2026 58.9°F (−0.4). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.8°F | −1.5°F | 1.76 in |
| 2022 | 62.4°F | +3.1°F | 5.73 in |
| 2023 | 59.6°F | +0.3°F | 1.46 in |
| 2024 | 63.0°F | +3.8°F | 4.04 in |
| 2025 | 57.5°F | −1.8°F | 2.14 in |
| 2026 | 58.9°F | −0.4°F | 0.97 in |
Source: records: ACIS, station USC00112736; recent months: ACIS, station USC00112736. Records and recent months use complete months only.
How does May in Elgin compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, May normal highs run from 67°F in Waukegan to 79°F in Belleville; Elgin's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.