Romeoville weather in June: Romeoville, Illinois: normal highs, lows, rain and records for June
Romeoville in June has a normal high of 82°F and a normal low of 60°F, a daily mean of 71°F, rising from 78°F on the 1st to 84°F by the 30th. Measurable precipitation falls on 12 days in a normal June, 4.68 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 119 mm of precipitation in June.
- 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 June?
The normal high is 82°F and the normal low 60°F, for a daily mean of 70.9°F. June is 9.5°F warmer than May and 3.7°F cooler than July. June is the 3rd warmest month of the year in Romeoville and the 2nd wettest. Across the month the normal high rises 6°F, from 78°F on June 1 to 84°F on June 30. From one year to the next June's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Junes in three average between 69°F and 73°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| June 1 | 78°F | 56°F | 42% | 28% |
| June 8 | 80°F | 58°F | 40% | 27% |
| June 15 | 82°F | 60°F | 39% | 26% |
| June 22 | 83°F | 62°F | 37% | 25% |
| June 30 | 84°F | 64°F | 35% | 24% |
Every day of June: normal high, low and chance of precipitation (warmest afternoon June 30, coldest night June 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| June 1 | 78°F | 56°F | 42% | 28% | 15 h |
| June 2 | 78°F | 56°F | 42% | 28% | 15 h |
| June 3 | 78°F | 57°F | 41% | 28% | 15 h |
| June 4 | 79°F | 57°F | 41% | 27% | 15 h |
| June 5 | 79°F | 57°F | 41% | 27% | 15 h |
| June 6 | 79°F | 58°F | 41% | 27% | 15 h |
| June 7 | 80°F | 58°F | 40% | 27% | 15 h |
| June 8 | 80°F | 58°F | 40% | 27% | 15 h 10 min |
| June 9 | 80°F | 59°F | 40% | 27% | 15 h 10 min |
| June 10 | 80°F | 59°F | 40% | 27% | 15 h 10 min |
| June 11 | 81°F | 59°F | 40% | 26% | 15 h 10 min |
| June 12 | 81°F | 60°F | 40% | 26% | 15 h 10 min |
| June 13 | 81°F | 60°F | 39% | 26% | 15 h 10 min |
| June 14 | 81°F | 60°F | 39% | 26% | 15 h 10 min |
| June 15 | 82°F | 60°F | 39% | 26% | 15 h 10 min |
| June 16 | 82°F | 61°F | 39% | 26% | 15 h 10 min |
| June 17 | 82°F | 61°F | 38% | 26% | 15 h 10 min |
| June 18 | 82°F | 61°F | 38% | 26% | 15 h 10 min |
| June 19 | 83°F | 62°F | 38% | 25% | 15 h 10 min |
| June 20 | 83°F | 62°F | 38% | 25% | 15 h 10 min |
| June 21 | 83°F | 62°F | 37% | 25% | 15 h 10 min |
| June 22 | 83°F | 62°F | 37% | 25% | 15 h 10 min |
| June 23 | 83°F | 62°F | 37% | 25% | 15 h 10 min |
| June 24 | 83°F | 63°F | 37% | 25% | 15 h 10 min |
| June 25 | 84°F | 63°F | 36% | 24% | 15 h 10 min |
| June 26 | 84°F | 63°F | 36% | 24% | 15 h 10 min |
| June 27 | 84°F | 63°F | 36% | 24% | 15 h 10 min |
| June 28 | 84°F | 63°F | 36% | 24% | 15 h 10 min |
| June 29 | 84°F | 64°F | 35% | 24% | 15 h 10 min |
| June 30 | 84°F | 64°F | 35% | 24% | 15 h 10 min |
- Normal high
- 82°FJune average
- Normal low
- 60°FJune average
- Precipitation
- 4.68 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 15 h to 15 h 10 minJune 1 to June 30
- Days at 70°F or more
- 27
- Days at 80°F or more
- 18
- Sunshine
- 77%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 in Romeoville in June?
On a given June day the chance of 0.01 inch or more is 39% on average, highest around June 1 (42%). In all, 4.68 in falls on 12 days of a normal June, 2 of them with an inch or more.
In a normal June in Romeoville, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00117457.
What are the records for June in Romeoville?
The warmest June temperature on this station's record (since 1992) is 99°F, on June 28, 2012; the coldest is 38°F, on June 21, 1992. The wettest June brought 9.25 in (1993).
The June mean against the 1991-2020 normal of 70.9°F: 2021 73.3°F (+2.4), 2022 71.5°F (+0.6), 2023 70.2°F (−0.7), 2024 72.9°F (+2.0), 2025 72.8°F (+1.9), 2026 70.1°F (−0.8). 4 of 6 ran warmer than normal.
| June | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.3°F | +2.4°F | 6.64 in |
| 2022 | 71.5°F | +0.6°F | 2.03 in |
| 2023 | 70.2°F | −0.7°F | 1.20 in |
| 2024 | 72.9°F | +2.0°F | 4.98 in |
| 2025 | 72.8°F | +1.9°F | 3.00 in |
| 2026 | 70.1°F | −0.8°F | 8.59 in |
Source: records: ACIS, station USC00117457; recent months: ACIS, station USC00117457. Records and recent months use complete months only.
How does June in Romeoville compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, June normal highs run from 76°F in Waukegan to 87°F in Belleville; Romeoville's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.