Home / Algonquin / 18 May 2018
Algonquin
United States · 18 May 2018
Average
14.3°C
low 10.3° · high 19.7°
Rainfall
10.1mm
rain recorded
Wind
4.3m/s
daily average
Humidity
66.3%
daily average
Cloud
99%
cover
Pressure
1017hPa
daily average
The temperature ranged from 10.3°C around 05:00 to 19.7°C around 15:00. Rain was recorded across 7 hours, from around 17:00 to 23:00 (10.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
43th percentile
Low temperature
46th percentile
Rainfall
91th percentile
Wind
79th 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 16.2°C, versus 14.3°C on this specific day.
Sun & daylight
Sunrise
05:28
Sunset
20:10
Day length
14h 42m
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 | 11.6 | 8.1 | 0 | 4.1 | ENE | 74 | 1019 |
| 01:00 | 06:00 | 11.6 | 8 | 0 | 4.3 | ENE | 75 | 1019 |
| 02:00 | 07:00 | 11.5 | 7.8 | 0 | 4.2 | ENE | 75 | 1019 |
| 03:00 | 08:00 | 11.3 | 7.4 | 0 | 4.3 | ENE | 73 | 1019 |
| 04:00 | 09:00 | 10.9 | 6.9 | 0 | 4.4 | ENE | 71 | 1019 |
| 05:00 | 10:00 | 10.3 | 6.1 | 0 | 4.1 | ENE | 66 | 1019 |
| 06:00 | 11:00 | 10.3 | 6 | 0 | 4.1 | ENE | 62 | 1019 |
| 07:00 | 12:00 | 11.1 | 6.8 | 0 | 4.2 | NE | 61 | 1020 |
| 08:00 | 13:00 | 12.4 | 8.2 | 0 | 4.3 | ENE | 60 | 1020 |
| 09:00 | 14:00 | 13.7 | 9.6 | 0 | 4.5 | ENE | 59 | 1019 |
| 10:00 | 15:00 | 16.3 | 12.1 | 0 | 4.6 | ENE | 50 | 1019 |
| 11:00 | 16:00 | 17.2 | 13.1 | 0 | 4.7 | ENE | 49 | 1019 |
| 12:00 | 17:00 | 18.4 | 14.5 | 0 | 4.7 | ENE | 49 | 1018 |
| 13:00 | 18:00 | 18.8 | 15 | 0 | 4.8 | ENE | 49 | 1018 |
| 14:00 | 19:00 | 19.4 | 15.6 | 0 | 5.1 | ENE | 50 | 1017 |
| 15:00 | 20:00 | 19.7 | 15.9 | 0 | 5.2 | ENE | 51 | 1016 |
| 16:00 | 21:00 | 19.1 | 15.7 | 0.01 | 4.6 | ENE | 53 | 1016 |
| 17:00 | 22:00 | 16.2 | 13.7 | 0.63 | 3.4 | NNE | 65 | 1015 |
| 18:00 | 23:00 | 14.9 | 12.5 | 0.97 | 3.3 | NE | 70 | 1015 |
| 19:00 | 00:00 | 13.4 | 11 | 3.2 | 3.3 | ENE | 76 | 1015 |
| 20:00 | 01:00 | 13.5 | 11.2 | 1.34 | 3.4 | ENE | 79 | 1015 |
| 21:00 | 02:00 | 13.9 | 11.5 | 2.27 | 3.8 | E | 82 | 1014 |
| 22:00 | 03:00 | 13.7 | 11.8 | 1.04 | 4.3 | E | 97 | 1015 |
| 23:00 | 04:00 | 13.6 | 11.5 | 0.61 | 4.5 | E | 98 | 1014 |
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
- Algonquin — 42.250°, -88.250°, ERA5 grid cell center, 10.1 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 18 May 2018 specifically — not a monthly average. See the Algonquin 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 (2026-07-18). Historical climate data for Algonquin, United States (42.25°N, 88.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Algonquin, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Algonquin, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Algonquin, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.