Boulder
United States · 12 June 2022
Average
11.1°C
low 7.7°C · high 15.6°C
Rainfall
5.1mm
rain recorded
Wind
1.5m/s
daily average
Humidity
82.8%
daily average
Cloud
82%
cover
Pressure
1006hPa
daily average
The temperature ranged from 7.7°C around 03:00 to 15.6°C around 14:00. Rain was recorded across 11 hours, from around 09:00 to 23:00 (5.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
20th percentile
Low temperature
60th percentile
Rainfall
73th percentile
Wind
25th 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 13.2°C, versus 11.1°C on this specific day.
Sun & daylight
Sunrise
05:35
Sunset
21:20
Day length
15h 45m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 9.5°C | 7.9°C | 0 | 1.3 | SW | 84 | 1010 |
| 01:00 | 07:00 | 9.8°C | 8°C | 0 | 1.5 | WSW | 81 | 1010 |
| 02:00 | 08:00 | 9.9°C | 8.2°C | 0 | 1.3 | WSW | 80 | 1009 |
| 03:00 | 09:00 | 7.7°C | 5.9°C | 0 | 1.1 | WSW | 86 | 1008 |
| 04:00 | 10:00 | 8.5°C | 6.6°C | 0 | 1.7 | WSW | 90 | 1009 |
| 05:00 | 11:00 | 8.7°C | 6.8°C | 0 | 1.6 | WSW | 89 | 1009 |
| 06:00 | 12:00 | 7.9°C | 6.3°C | 0 | 1.2 | W | 92 | 1009 |
| 07:00 | 13:00 | 8.4°C | 7°C | 0 | 1 | W | 91 | 1008 |
| 08:00 | 14:00 | 9.6°C | 8.8°C | 0.03 | 0.5 | WSW | 89 | 1008 |
| 09:00 | 15:00 | 11.9°C | 11.2°C | 0.16 | 0.4 | SSW | 79 | 1008 |
| 10:00 | 16:00 | 12.2°C | 11.5°C | 0.23 | 0.6 | SSE | 79 | 1007 |
| 11:00 | 17:00 | 13°C | 11.8°C | 0.14 | 1.4 | SSE | 78 | 1006 |
| 12:00 | 18:00 | 14.3°C | 13°C | 0.12 | 2 | S | 76 | 1005 |
| 13:00 | 19:00 | 14.8°C | 13.4°C | 0.28 | 2.2 | SSE | 74 | 1004 |
| 14:00 | 20:00 | 15.6°C | 14.1°C | 0.47 | 2.5 | S | 73 | 1003 |
| 15:00 | 21:00 | 15.3°C | 13.5°C | 1.53 | 2.8 | S | 73 | 1004 |
| 16:00 | 22:00 | 11.5°C | 9.5°C | 0.93 | 2.6 | S | 85 | 1005 |
| 17:00 | 23:00 | 12.1°C | 10.6°C | 0.63 | 1.9 | S | 80 | 1004 |
| 18:00 | 00:00 | 12°C | 10.5°C | 0.27 | 1.5 | S | 76 | 1003 |
| 19:00 | 01:00 | 11.6°C | 10°C | 0.08 | 1.6 | S | 78 | 1002 |
| 20:00 | 02:00 | 11.2°C | 10°C | 0.03 | 1.5 | S | 86 | 1002 |
| 21:00 | 03:00 | 10.6°C | 9.5°C | 0.01 | 0.9 | SE | 85 | 1002 |
| 22:00 | 04:00 | 10.1°C | 8.9°C | 0.06 | 1.1 | SSE | 88 | 1002 |
| 23:00 | 05:00 | 9.2°C | 7.6°C | 0.15 | 1.7 | S | 94 | 1002 |
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
- Boulder — 46.250°, -112.000°, ERA5 grid cell center, 9.4 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 12 June 2022 specifically — not a monthly average. See the Boulder 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 Boulder, United States (46.25°N, 112.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Boulder, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Boulder, 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 Boulder, 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.