Boulder
United States · 24 May 2016
Average
11°C
low 3.2° · high 17.7°
Rainfall
6.5mm
rain recorded
Wind
1.9m/s
daily average
Humidity
72.5%
daily average
Cloud
33%
cover
Pressure
1009hPa
daily average
The temperature ranged from 3.2°C around 05:00 to 17.7°C around 15:00. Rain was recorded across 7 hours, from around 13:00 to 20:00 (6.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
41th percentile
Low temperature
28th percentile
Rainfall
79th percentile
Wind
47th 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 11.4°C, versus 11°C on this specific day.
Sun & daylight
Sunrise
05:38
Sunset
20:18
Day length
14h 40m
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 | 8 | 5.8 | 0 | 1.2 | WSW | 76 | 1012 |
| 01:00 | 07:00 | 8.1 | 5.6 | 0 | 1.5 | WSW | 72 | 1011 |
| 02:00 | 08:00 | 5.8 | 3.2 | 0 | 1.4 | W | 79 | 1011 |
| 03:00 | 09:00 | 5.1 | 2.3 | 0 | 1.7 | W | 82 | 1011 |
| 04:00 | 10:00 | 3.6 | 0.4 | 0 | 2.4 | W | 95 | 1011 |
| 05:00 | 11:00 | 3.2 | 0.4 | 0 | 1.7 | W | 94 | 1010 |
| 06:00 | 12:00 | 3.3 | 0.7 | 0 | 1.3 | W | 92 | 1011 |
| 07:00 | 13:00 | 4.6 | 2.2 | 0 | 1.5 | WSW | 97 | 1011 |
| 08:00 | 14:00 | 8.9 | 7.1 | 0 | 1 | SSE | 80 | 1012 |
| 09:00 | 15:00 | 13 | 10.5 | 0 | 2.1 | SE | 60 | 1012 |
| 10:00 | 16:00 | 14.4 | 11.5 | 0 | 2.7 | SE | 56 | 1012 |
| 11:00 | 17:00 | 16.2 | 13.4 | 0 | 2.7 | SE | 51 | 1011 |
| 12:00 | 18:00 | 16.8 | 13.8 | 0.06 | 3.3 | ESE | 52 | 1010 |
| 13:00 | 19:00 | 17.5 | 14 | 0.53 | 3.8 | ESE | 49 | 1009 |
| 14:00 | 20:00 | 17.7 | 14.5 | 1.29 | 3.2 | ESE | 47 | 1009 |
| 15:00 | 21:00 | 17.7 | 14.4 | 1.1 | 2.8 | ESE | 39 | 1008 |
| 16:00 | 22:00 | 13.8 | 13.1 | 2.27 | 0.8 | NW | 75 | 1006 |
| 17:00 | 23:00 | 13.8 | 12.8 | 0.77 | 1.6 | NNE | 80 | 1005 |
| 18:00 | 00:00 | 14 | 12.6 | 0.29 | 2 | NE | 76 | 1005 |
| 19:00 | 01:00 | 15.1 | 13.3 | 0.04 | 2.3 | ENE | 68 | 1005 |
| 20:00 | 02:00 | 14.4 | 13.5 | 0.17 | 1.1 | ESE | 72 | 1006 |
| 21:00 | 03:00 | 10.4 | 9.4 | 0.04 | 0.6 | W | 83 | 1007 |
| 22:00 | 04:00 | 9.4 | 7.7 | 0 | 1.3 | W | 85 | 1007 |
| 23:00 | 05:00 | 8.6 | 6.7 | 0 | 1.4 | W | 83 | 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
- Boulder — 40.000°, -105.250°, ERA5 grid cell center, 2.4 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 24 May 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 (40.00°N, 105.25°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.