Ottawa
United States · 29 June 2017
Average
23.8°C
low 20.3°C · high 26.9°C
Rainfall
20.7mm
rain recorded
Wind
4.5m/s
daily average
Humidity
73%
daily average
Cloud
95%
cover
Pressure
1010hPa
daily average
The temperature ranged from 20.3°C around 23:00 to 26.9°C around 14:00. Rain was recorded across 12 hours, from around 02:00 to 23:00 (20.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
25th percentile
Low temperature
53th percentile
Rainfall
94th percentile
Wind
86th 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 24.6°C, versus 23.8°C on this specific day.
Sun & daylight
Sunrise
05:24
Sunset
20:32
Day length
15h 7m
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 | 24.8°C | 21°C | 0 | 8.3 | SSW | 59 | 1008 |
| 01:00 | 06:00 | 24.1°C | 20.7°C | 0 | 8 | SSW | 62 | 1008 |
| 02:00 | 07:00 | 24.2°C | 21.2°C | 0.51 | 7.5 | SW | 64 | 1009 |
| 03:00 | 08:00 | 24.3°C | 21.6°C | 2.68 | 7.3 | SW | 64 | 1008 |
| 04:00 | 09:00 | 23.8°C | 21.2°C | 3.37 | 7.4 | SW | 67 | 1009 |
| 05:00 | 10:00 | 21.8°C | 21.4°C | 0.17 | 4.4 | WSW | 78 | 1007 |
| 06:00 | 11:00 | 21.7°C | 21.8°C | 0.06 | 3.8 | WSW | 78 | 1009 |
| 07:00 | 12:00 | 22.1°C | 22.2°C | 0.01 | 3.6 | WSW | 76 | 1009 |
| 08:00 | 13:00 | 22.7°C | 22.3°C | 0 | 4.4 | WSW | 74 | 1009 |
| 09:00 | 14:00 | 23.9°C | 23.3°C | 0 | 4.9 | WSW | 71 | 1009 |
| 10:00 | 15:00 | 24.8°C | 23.7°C | 0.06 | 5.5 | WSW | 65 | 1010 |
| 11:00 | 16:00 | 25.8°C | 24.8°C | 0 | 5.7 | WSW | 64 | 1011 |
| 12:00 | 17:00 | 26.6°C | 25.6°C | 0 | 6.3 | WSW | 64 | 1011 |
| 13:00 | 18:00 | 26.5°C | 25.6°C | 0 | 6.2 | WSW | 66 | 1011 |
| 14:00 | 19:00 | 26.9°C | 26.5°C | 0.01 | 5.6 | WSW | 64 | 1011 |
| 15:00 | 20:00 | 26.4°C | 26.5°C | 0.04 | 4.7 | WSW | 66 | 1010 |
| 16:00 | 21:00 | 26.7°C | 27.2°C | 0.52 | 3.8 | WSW | 62 | 1011 |
| 17:00 | 22:00 | 24°C | 27.1°C | 0.45 | 1.2 | NW | 82 | 1010 |
| 18:00 | 23:00 | 23.2°C | 25.6°C | 0.38 | 2.3 | NW | 85 | 1010 |
| 19:00 | 00:00 | 23.1°C | 25.6°C | 0.74 | 1.9 | NNW | 84 | 1010 |
| 20:00 | 01:00 | 22.3°C | 24.4°C | 3.2 | 1.6 | ESE | 82 | 1010 |
| 21:00 | 02:00 | 21.5°C | 23.9°C | 5.03 | 1.4 | S | 87 | 1010 |
| 22:00 | 03:00 | 20.5°C | 23°C | 3.16 | 1.4 | SSW | 95 | 1011 |
| 23:00 | 04:00 | 20.3°C | 22.4°C | 0.31 | 1.8 | SW | 94 | 1011 |
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 29 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ottawa, 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 Ottawa, 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.