Ottawa
United States · 25 June 2017
Average
17°C
low 11.8° · high 20.8°
Rainfall
0.1mm
dry day
Wind
4.6m/s
daily average
Humidity
62.2%
daily average
Cloud
20%
cover
Pressure
1020hPa
daily average
The temperature ranged from 11.8°C around 05:00 to 20.8°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
1th percentile
Low temperature
2th percentile
Rainfall
42th percentile
Wind
84th 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 24.4°C, versus 17°C on this specific day.
Sun & daylight
Sunrise
05:23
Sunset
20:32
Day length
15h 9m
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 | 14.9 | 12.5 | 0 | 3.4 | WSW | 71 | 1019 |
| 01:00 | 06:00 | 14.7 | 11.8 | 0 | 3.9 | W | 70 | 1019 |
| 02:00 | 07:00 | 14.4 | 11.9 | 0 | 3.4 | WNW | 71 | 1019 |
| 03:00 | 08:00 | 13.7 | 11.6 | 0 | 2.8 | WNW | 75 | 1019 |
| 04:00 | 09:00 | 13 | 10.7 | 0 | 2.8 | W | 76 | 1019 |
| 05:00 | 10:00 | 11.8 | 9.9 | 0 | 2.2 | WNW | 80 | 1019 |
| 06:00 | 11:00 | 12.1 | 10 | 0 | 2.7 | W | 80 | 1020 |
| 07:00 | 12:00 | 13.9 | 11.7 | 0 | 3.3 | W | 76 | 1020 |
| 08:00 | 13:00 | 15.7 | 13.1 | 0 | 4 | W | 73 | 1020 |
| 09:00 | 14:00 | 17 | 13.9 | 0 | 4.9 | WNW | 68 | 1021 |
| 10:00 | 15:00 | 19.3 | 14.9 | 0 | 5.7 | WNW | 48 | 1021 |
| 11:00 | 16:00 | 19.9 | 15.2 | 0 | 5.9 | WNW | 44 | 1021 |
| 12:00 | 17:00 | 20.1 | 14.7 | 0 | 6.8 | WNW | 43 | 1021 |
| 13:00 | 18:00 | 20.2 | 14.9 | 0.01 | 7 | WNW | 46 | 1020 |
| 14:00 | 19:00 | 19.7 | 14.8 | 0 | 6.7 | WNW | 50 | 1020 |
| 15:00 | 20:00 | 20.7 | 16.1 | 0 | 6.5 | WNW | 50 | 1020 |
| 16:00 | 21:00 | 20.8 | 15.8 | 0.01 | 7 | WNW | 48 | 1020 |
| 17:00 | 22:00 | 20.2 | 16.5 | 0.02 | 5.5 | WNW | 54 | 1019 |
| 18:00 | 23:00 | 19.9 | 15.9 | 0.01 | 6.1 | WNW | 55 | 1020 |
| 19:00 | 00:00 | 19.3 | 15.6 | 0 | 5.4 | WNW | 55 | 1020 |
| 20:00 | 01:00 | 18.6 | 15.3 | 0 | 4.5 | WNW | 55 | 1020 |
| 21:00 | 02:00 | 17.4 | 14.6 | 0 | 3.6 | WNW | 57 | 1020 |
| 22:00 | 03:00 | 15.7 | 13.9 | 0 | 3.1 | WNW | 73 | 1021 |
| 23:00 | 04:00 | 15 | 13.1 | 0 | 3 | W | 75 | 1021 |
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
- Ottawa — 41.250°, -88.750°, ERA5 grid cell center, 13.1 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 25 June 2017 specifically — not a monthly average. See the Ottawa 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 (2026-07-17). Historical climate data for Ottawa, United States (41.25°N, 88.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ottawa, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ottawa, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Ottawa, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.