Home / Lake Forest / 17 May 2025
Lake Forest
United States · 17 May 2025
Average
12.2°C
low 11.1° · high 14.4°
Rainfall
0mm
dry day
Wind
7.1m/s
daily average
Humidity
68.8%
daily average
Cloud
88%
cover
Pressure
1003hPa
daily average
The temperature ranged from 11.1°C around 06:00 to 14.4°C around 00:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
62th percentile
Low temperature
79th percentile
Rainfall
39th percentile
Wind
94th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 10.9°C, versus 12.2°C on this specific day.
Sun & daylight
Sunrise
05:27
Sunset
20:07
Day length
14h 40m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 14.4 | 7.3 | 0 | 8.9 | WSW | 57 | 997 |
| 01:00 | 06:00 | 13.6 | 6.1 | 0 | 9.5 | WSW | 61 | 998 |
| 02:00 | 07:00 | 13 | 5.8 | 0 | 9.1 | WSW | 64 | 998 |
| 03:00 | 08:00 | 12.5 | 5.5 | 0 | 8.8 | WSW | 66 | 998 |
| 04:00 | 09:00 | 12.1 | 5.1 | 0 | 8.7 | WSW | 67 | 999 |
| 05:00 | 10:00 | 11.2 | 5.2 | 0 | 7.3 | WSW | 70 | 1000 |
| 06:00 | 11:00 | 11.1 | 4.9 | 0 | 7.4 | WSW | 71 | 1001 |
| 07:00 | 12:00 | 11.1 | 4.2 | 0 | 8.4 | W | 70 | 1001 |
| 08:00 | 13:00 | 11.1 | 4.3 | 0 | 8.5 | W | 71 | 1001 |
| 09:00 | 14:00 | 11.1 | 4.7 | 0 | 8 | W | 72 | 1002 |
| 10:00 | 15:00 | 11.2 | 4.7 | 0 | 8.2 | W | 73 | 1002 |
| 11:00 | 16:00 | 11.5 | 5.1 | 0 | 7.9 | W | 72 | 1003 |
| 12:00 | 17:00 | 11.7 | 5.4 | 0.01 | 7.8 | W | 71 | 1004 |
| 13:00 | 18:00 | 11.9 | 6 | 0.02 | 7.3 | W | 70 | 1004 |
| 14:00 | 19:00 | 12 | 6.5 | 0 | 6.8 | W | 71 | 1005 |
| 15:00 | 20:00 | 12.5 | 7.4 | 0 | 6.2 | W | 68 | 1005 |
| 16:00 | 21:00 | 12.7 | 7.9 | 0 | 5.7 | W | 68 | 1006 |
| 17:00 | 22:00 | 13 | 8.2 | 0 | 5.7 | WNW | 66 | 1006 |
| 18:00 | 23:00 | 12.7 | 8.8 | 0 | 4.6 | WNW | 68 | 1006 |
| 19:00 | 00:00 | 12.9 | 9.1 | 0 | 4.5 | WNW | 68 | 1007 |
| 20:00 | 01:00 | 13.1 | 9.3 | 0 | 4.5 | NW | 68 | 1008 |
| 21:00 | 02:00 | 12.7 | 8.7 | 0 | 4.8 | NW | 71 | 1008 |
| 22:00 | 03:00 | 12.1 | 7.9 | 0 | 5.3 | NW | 73 | 1009 |
| 23:00 | 04:00 | 11.5 | 7 | 0 | 5.6 | NW | 76 | 1010 |
Nearby cities
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Data source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Lake Forest — 42.250°, -87.750°, ERA5 grid cell center, 7.5 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 17 May 2025 specifically — not a monthly average. See the Lake Forest climate overview for typical conditions.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-16). Historical climate data for Lake Forest, United States (42.25°N, 87.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Lake Forest, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Lake Forest, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Lake Forest, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.