Ottawa
United States · 25 June 2018
Average
22.3°C
low 16.8° · high 26.9°
Rainfall
0mm
dry day
Wind
4.6m/s
daily average
Humidity
74.3%
daily average
Cloud
84%
cover
Pressure
1018hPa
daily average
The temperature ranged from 16.8°C around 04:00 to 26.9°C around 18:00. 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
30th percentile
Low temperature
26th percentile
Rainfall
33th percentile
Wind
80th 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 24.1°C, versus 22.3°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 | 18.4 | 17.9 | 0 | 3.7 | NE | 87 | 1018 |
| 01:00 | 06:00 | 17.8 | 17.2 | 0 | 3.8 | NE | 90 | 1018 |
| 02:00 | 07:00 | 17.4 | 16.4 | 0 | 4.3 | NE | 92 | 1017 |
| 03:00 | 08:00 | 17.1 | 16.2 | 0 | 4.2 | NE | 93 | 1018 |
| 04:00 | 09:00 | 16.8 | 15.7 | 0 | 4.4 | NE | 95 | 1018 |
| 05:00 | 10:00 | 17.4 | 17.1 | 0 | 3.4 | ENE | 94 | 1019 |
| 06:00 | 11:00 | 17.8 | 16.9 | 0 | 4.3 | ENE | 92 | 1019 |
| 07:00 | 12:00 | 18.8 | 18.1 | 0 | 4.4 | E | 89 | 1018 |
| 08:00 | 13:00 | 20.1 | 19.9 | 0 | 4.1 | E | 87 | 1019 |
| 09:00 | 14:00 | 21 | 20.9 | 0 | 4.1 | ESE | 82 | 1019 |
| 10:00 | 15:00 | 23.2 | 22.6 | 0.01 | 4.3 | E | 68 | 1019 |
| 11:00 | 16:00 | 23.9 | 23 | 0.01 | 4.8 | E | 67 | 1019 |
| 12:00 | 17:00 | 24.5 | 23.6 | 0.01 | 5 | E | 65 | 1018 |
| 13:00 | 18:00 | 25.1 | 24.3 | 0 | 4.9 | ESE | 63 | 1019 |
| 14:00 | 19:00 | 25.8 | 24.5 | 0 | 5.5 | ESE | 61 | 1018 |
| 15:00 | 20:00 | 26.2 | 24.7 | 0 | 5.8 | ESE | 58 | 1017 |
| 16:00 | 21:00 | 26.6 | 25 | 0 | 5.7 | ESE | 56 | 1016 |
| 17:00 | 22:00 | 26.9 | 25.5 | 0 | 5.9 | ESE | 58 | 1016 |
| 18:00 | 23:00 | 26.9 | 26.4 | 0 | 4.9 | ESE | 60 | 1017 |
| 19:00 | 00:00 | 26.4 | 25.9 | 0 | 4.7 | ESE | 60 | 1017 |
| 20:00 | 01:00 | 25.2 | 24.9 | 0 | 4 | ESE | 62 | 1017 |
| 21:00 | 02:00 | 24.7 | 24.3 | 0 | 4.1 | ESE | 63 | 1017 |
| 22:00 | 03:00 | 23.5 | 23.1 | 0 | 4.5 | ESE | 71 | 1017 |
| 23:00 | 04:00 | 23.1 | 22.5 | 0 | 4.7 | ESE | 72 | 1016 |
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 2018 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.