Romeoville weather in April: Romeoville, Illinois: normal highs, lows, rain and records for April
Romeoville in April has a normal high of 61°F and a normal low of 40°F, a daily mean of 50°F, rising from 55°F on the 1st to 67°F by the 30th. Measurable precipitation falls on 12 days in a normal April, 4.11 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 16°C and low of 4°C, 104 mm of precipitation and 2 cm of snow in April.
- NOAA stationRomeoville Weather Office
- Station IDUSC00117457
- Location41.60°N 88.08°W
- Elevation660 ft (201 m)
- From the center2 miles
- Population41,177
- Jan 32° 16°
- Feb 36° 20°
- Mar 49° 30°
- Apr 61° 40°
- May 72° 50°
- Jun 82° 60°
- Jul 85° 65°
- Aug 83° 63°
- Sep 76° 55°
- Oct 64° 44°
- Nov 49° 32°
- Dec 37° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Romeoville in April?
The normal high is 61°F and the normal low 40°F, for a daily mean of 50.3°F. April is 11.2°F warmer than March and 11.1°F cooler than May. April is the 7th warmest month of the year in Romeoville and the 5th wettest. Across the month the normal high rises 12°F, from 55°F on April 1 to 67°F on April 30. From one year to the next April's mean temperature typically moves about 3.1°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 47°F and 53°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 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 55°F | 35°F | 38% | 23% |
| April 8 | 58°F | 37°F | 39% | 24% |
| April 15 | 61°F | 39°F | 41% | 25% |
| April 22 | 64°F | 42°F | 42% | 27% |
| April 30 | 67°F | 45°F | 44% | 28% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 55°F | 35°F | 38% | 23% | 12 h 40 min |
| April 2 | 56°F | 35°F | 38% | 23% | 12 h 40 min |
| April 3 | 56°F | 35°F | 38% | 23% | 12 h 40 min |
| April 4 | 57°F | 36°F | 38% | 23% | 12 h 50 min |
| April 5 | 57°F | 36°F | 39% | 24% | 12 h 50 min |
| April 6 | 57°F | 36°F | 39% | 24% | 12 h 50 min |
| April 7 | 58°F | 37°F | 39% | 24% | 13 h |
| April 8 | 58°F | 37°F | 39% | 24% | 13 h |
| April 9 | 59°F | 37°F | 39% | 24% | 13 h |
| April 10 | 59°F | 38°F | 39% | 24% | 13 h |
| April 11 | 59°F | 38°F | 40% | 25% | 13 h 10 min |
| April 12 | 60°F | 38°F | 40% | 25% | 13 h 10 min |
| April 13 | 60°F | 39°F | 40% | 25% | 13 h 10 min |
| April 14 | 60°F | 39°F | 40% | 25% | 13 h 10 min |
| April 15 | 61°F | 39°F | 41% | 25% | 13 h 20 min |
| April 16 | 61°F | 40°F | 41% | 26% | 13 h 20 min |
| April 17 | 62°F | 40°F | 41% | 26% | 13 h 20 min |
| April 18 | 62°F | 40°F | 41% | 26% | 13 h 30 min |
| April 19 | 62°F | 41°F | 42% | 26% | 13 h 30 min |
| April 20 | 63°F | 41°F | 42% | 27% | 13 h 30 min |
| April 21 | 63°F | 41°F | 42% | 27% | 13 h 30 min |
| April 22 | 64°F | 42°F | 42% | 27% | 13 h 40 min |
| April 23 | 64°F | 42°F | 42% | 27% | 13 h 40 min |
| April 24 | 64°F | 43°F | 42% | 27% | 13 h 40 min |
| April 25 | 65°F | 43°F | 43% | 28% | 13 h 40 min |
| April 26 | 65°F | 43°F | 43% | 28% | 13 h 50 min |
| April 27 | 66°F | 44°F | 43% | 28% | 13 h 50 min |
| April 28 | 66°F | 44°F | 43% | 28% | 13 h 50 min |
| April 29 | 66°F | 44°F | 43% | 28% | 13 h 50 min |
| April 30 | 67°F | 45°F | 44% | 28% | 14 h |
- Normal high
- 61°FApril average
- Normal low
- 40°FApril average
- Precipitation
- 4.11 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 0.9 inmonth total
- Nights at 32°F or colder
- 5
- Daylight
- 12 h 40 min to 14 hApril 1 to April 30
- Days at 70°F or more
- 7
- Days at 80°F or more
- 2
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00117457; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Romeoville in April?
On a given April day the chance of 0.01 inch or more is 41% on average, highest around April 30 (44%). In all, 4.11 in falls on 12 days of a normal April, 1 of them with an inch or more.
In a normal April in Romeoville, 5 nights fall to freezing and snowfall averages 0.9 inches.
Snow falls on 1 day in a normal April.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00117457.
What are the records for April in Romeoville?
The warmest April temperature on this station's record (since 1992) is 89°F, on April 26, 1994; the coldest is 16°F, on April 7, 1994. The wettest April brought 7.86 in (2013); the snowiest, 6.6 inches (2020).
The April mean against the 1991-2020 normal of 50.3°F: 2021 51.5°F (+1.2), 2022 46.8°F (−3.5), 2023 50.5°F (+0.2), 2024 52.9°F (+2.6), 2025 51.0°F (+0.7), 2026 54.0°F (+3.7). 5 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 51.5°F | +1.2°F | 1.43 in |
| 2022 | 46.8°F | −3.5°F | 4.24 in |
| 2023 | 50.5°F | +0.2°F | 1.80 in |
| 2024 | 52.9°F | +2.6°F | 5.76 in |
| 2025 | 51.0°F | +0.7°F | 3.92 in |
| 2026 | 54.0°F | +3.7°F | 5.68 in |
Source: records: ACIS, station USC00117457; recent months: ACIS, station USC00117457. Records and recent months use complete months only.
How does April in Romeoville compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, April normal highs run from 55°F in Waukegan to 71°F in Anna; Romeoville's is 61°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.