Home / Algonquin / 18 May 2017
Algonquin
United States · 18 May 2017
Average
20.2°C
low 9.8°C · high 24.5°C
Rainfall
0.1mm
dry day
Wind
6.8m/s
daily average
Humidity
65.6%
daily average
Cloud
53%
cover
Pressure
1008hPa
daily average
The temperature ranged from 9.8°C around 23:00 to 24.5°C around 16:00. 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
67th percentile
Low temperature
36th percentile
Rainfall
43th percentile
Wind
100th 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 16.1°C, versus 20.2°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 | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 20.8°C | 18.3°C | 0 | 7.3 | SSW | 81 | 1003 |
| 01:00 | 06:00 | 19.6°C | 17.4°C | 0 | 6.2 | SSW | 83 | 1002 |
| 02:00 | 07:00 | 20.1°C | 18°C | 0.09 | 6.4 | SSW | 83 | 1002 |
| 03:00 | 08:00 | 20.1°C | 17.6°C | 0 | 7.1 | SSW | 83 | 1001 |
| 04:00 | 09:00 | 20.3°C | 17.2°C | 0 | 7.9 | SW | 82 | 1002 |
| 05:00 | 10:00 | 21.3°C | 17.6°C | 0 | 7.3 | SSW | 65 | 1002 |
| 06:00 | 11:00 | 21.1°C | 16.8°C | 0 | 7.8 | SW | 64 | 1003 |
| 07:00 | 12:00 | 21.1°C | 16.7°C | 0 | 8 | SW | 63 | 1003 |
| 08:00 | 13:00 | 21.1°C | 16.3°C | 0 | 8.4 | WSW | 62 | 1004 |
| 09:00 | 14:00 | 20.8°C | 15.9°C | 0 | 8.5 | WSW | 63 | 1006 |
| 10:00 | 15:00 | 21.2°C | 15.9°C | 0 | 8.6 | WSW | 56 | 1007 |
| 11:00 | 16:00 | 21.7°C | 16.5°C | 0 | 8.3 | WSW | 54 | 1007 |
| 12:00 | 17:00 | 22.4°C | 17.4°C | 0 | 8 | WSW | 52 | 1008 |
| 13:00 | 18:00 | 23.2°C | 18.3°C | 0 | 8 | WSW | 50 | 1008 |
| 14:00 | 19:00 | 23.7°C | 18.9°C | 0 | 8 | WSW | 50 | 1009 |
| 15:00 | 20:00 | 24.3°C | 19.7°C | 0 | 7.7 | W | 49 | 1009 |
| 16:00 | 21:00 | 24.5°C | 20.3°C | 0 | 7 | W | 47 | 1010 |
| 17:00 | 22:00 | 22.5°C | 20.7°C | 0 | 4.3 | W | 58 | 1011 |
| 18:00 | 23:00 | 22.1°C | 20.4°C | 0 | 4.3 | NW | 61 | 1011 |
| 19:00 | 00:00 | 20.6°C | 18.8°C | 0 | 4.5 | NNW | 66 | 1013 |
| 20:00 | 01:00 | 17.7°C | 15.6°C | 0.01 | 4.2 | N | 72 | 1013 |
| 21:00 | 02:00 | 13.9°C | 10.6°C | 0.01 | 4.8 | NE | 76 | 1014 |
| 22:00 | 03:00 | 11.2°C | 7°C | 0 | 5.2 | NE | 79 | 1018 |
| 23:00 | 04:00 | 9.8°C | 4.7°C | 0 | 5.9 | NE | 76 | 1019 |
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 2017 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Algonquin, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 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 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.