Boulder
United States · 12 June 2016
Average
12.5°C
low 5.6° · high 19.7°
Rainfall
0mm
dry day
Wind
2.1m/s
daily average
Humidity
42.4%
daily average
Cloud
39%
cover
Pressure
1019hPa
daily average
The temperature ranged from 5.6°C around 06:00 to 19.7°C around 17:00. 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
51th percentile
Low temperature
39th percentile
Rainfall
21th percentile
Wind
52th 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°C, versus 12.5°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 °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 10.1 | 7.1 | 0 | 2.2 | WNW | 61 | 1018 |
| 01:00 | 07:00 | 10.1 | 6.5 | 0 | 2.6 | WNW | 54 | 1019 |
| 02:00 | 08:00 | 9.2 | 5.6 | 0 | 2.4 | NW | 53 | 1019 |
| 03:00 | 09:00 | 8.2 | 4.6 | 0 | 2.1 | WNW | 52 | 1020 |
| 04:00 | 10:00 | 6.9 | 3.7 | 0 | 1.2 | WNW | 50 | 1021 |
| 05:00 | 11:00 | 6.4 | 3.3 | 0 | 1.1 | W | 53 | 1021 |
| 06:00 | 12:00 | 5.6 | 2.3 | 0 | 1.7 | WSW | 63 | 1022 |
| 07:00 | 13:00 | 6.1 | 3.3 | 0 | 1.2 | WSW | 64 | 1022 |
| 08:00 | 14:00 | 7.1 | 4.1 | 0 | 1.4 | WSW | 60 | 1022 |
| 09:00 | 15:00 | 10.9 | 7.6 | 0 | 1.7 | WSW | 44 | 1022 |
| 10:00 | 16:00 | 12.1 | 8.6 | 0 | 2.1 | WSW | 42 | 1021 |
| 11:00 | 17:00 | 13.5 | 9.6 | 0 | 2.5 | SW | 37 | 1020 |
| 12:00 | 18:00 | 14.9 | 10.8 | 0 | 2.9 | SW | 35 | 1020 |
| 13:00 | 19:00 | 15.5 | 11.5 | 0 | 2.9 | SW | 33 | 1019 |
| 14:00 | 20:00 | 16.6 | 12.6 | 0 | 2.7 | SW | 29 | 1017 |
| 15:00 | 21:00 | 17.7 | 13.7 | 0 | 2.4 | SW | 26 | 1017 |
| 16:00 | 22:00 | 19 | 14.7 | 0 | 2.6 | WSW | 22 | 1016 |
| 17:00 | 23:00 | 19.7 | 15.4 | 0 | 2.7 | W | 21 | 1016 |
| 18:00 | 00:00 | 19.4 | 15 | 0 | 2.7 | WNW | 21 | 1015 |
| 19:00 | 01:00 | 19.5 | 15.3 | 0 | 2.6 | NW | 23 | 1015 |
| 20:00 | 02:00 | 17.5 | 14.4 | 0 | 1.8 | NNW | 34 | 1015 |
| 21:00 | 03:00 | 12.5 | 9.2 | 0 | 2.1 | N | 45 | 1016 |
| 22:00 | 04:00 | 10.2 | 6.7 | 0 | 2.3 | N | 50 | 1016 |
| 23:00 | 05:00 | 11.3 | 8.1 | 0 | 1.8 | NNW | 47 | 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
- 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 2016 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Boulder, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 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 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.