Ottawa
United States · 28 June 2017
Average
21.8°C
low 16.1° · high 27.6°
Rainfall
0.1mm
dry day
Wind
6.6m/s
daily average
Humidity
57.7%
daily average
Cloud
92%
cover
Pressure
1013hPa
daily average
The temperature ranged from 16.1°C around 05:00 to 27.6°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
31th percentile
Low temperature
12th percentile
Rainfall
41th percentile
Wind
99th 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 21.8°C on this specific day.
Sun & daylight
Sunrise
05:24
Sunset
20:32
Day length
15h 8m
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 | 16.4 | 13.6 | 0 | 3.9 | S | 64 | 1017 |
| 01:00 | 06:00 | 16.7 | 13.5 | 0 | 4.2 | S | 60 | 1017 |
| 02:00 | 07:00 | 16.3 | 12.7 | 0 | 4.5 | SSE | 57 | 1017 |
| 03:00 | 08:00 | 16.5 | 12.7 | 0 | 4.8 | SSE | 58 | 1016 |
| 04:00 | 09:00 | 16.8 | 13.3 | 0 | 4.8 | SSE | 62 | 1016 |
| 05:00 | 10:00 | 16.1 | 12.7 | 0 | 5 | S | 67 | 1016 |
| 06:00 | 11:00 | 17 | 13.3 | 0 | 5.4 | S | 64 | 1014 |
| 07:00 | 12:00 | 17.9 | 14 | 0 | 6 | S | 63 | 1015 |
| 08:00 | 13:00 | 18.8 | 15 | 0.02 | 6.1 | S | 63 | 1015 |
| 09:00 | 14:00 | 19.7 | 16.2 | 0.04 | 5.9 | SSW | 61 | 1015 |
| 10:00 | 15:00 | 20.7 | 17.8 | 0 | 5.4 | SSW | 61 | 1016 |
| 11:00 | 16:00 | 21.3 | 18 | 0 | 6.2 | S | 61 | 1015 |
| 12:00 | 17:00 | 22 | 18.1 | 0 | 7.4 | S | 62 | 1013 |
| 13:00 | 18:00 | 23.2 | 19 | 0 | 8.2 | S | 59 | 1012 |
| 14:00 | 19:00 | 24.9 | 20.7 | 0 | 8.7 | S | 57 | 1011 |
| 15:00 | 20:00 | 26.4 | 22.1 | 0 | 8.8 | SSW | 52 | 1010 |
| 16:00 | 21:00 | 27.4 | 22.9 | 0 | 8.9 | SSW | 47 | 1009 |
| 17:00 | 22:00 | 27.5 | 23.5 | 0 | 8.6 | SSW | 50 | 1010 |
| 18:00 | 23:00 | 27.6 | 24.2 | 0 | 7.8 | S | 50 | 1008 |
| 19:00 | 00:00 | 27.2 | 23.7 | 0 | 7.9 | S | 50 | 1008 |
| 20:00 | 01:00 | 26.7 | 23.3 | 0 | 7.4 | SSW | 50 | 1008 |
| 21:00 | 02:00 | 26.2 | 22.9 | 0 | 7 | SSW | 50 | 1008 |
| 22:00 | 03:00 | 25.3 | 22.6 | 0 | 6.8 | S | 57 | 1008 |
| 23:00 | 04:00 | 24.8 | 21.2 | 0 | 7.9 | S | 58 | 1008 |
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 28 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.