Lyons
United States · 21 May 2018
Average
12.9°C
low 3.3°C · high 20.9°C
Rainfall
0.8mm
dry day
Wind
1.9m/s
daily average
Humidity
65.6%
daily average
Cloud
51%
cover
Pressure
1012hPa
daily average
The temperature ranged from 3.3°C around 04:00 to 20.9°C around 14:00. Rain was recorded across 2 hours, from around 15:00 to 16:00 (0.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
73th percentile
Low temperature
30th percentile
Rainfall
36th percentile
Wind
43th 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 10.9°C, versus 12.9°C on this specific day.
Sun & daylight
Sunrise
05:39
Sunset
20:15
Day length
14h 36m
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 | 6.2°C | 4.2°C | 0 | 1.1 | W | 92 | 1015 |
| 01:00 | 07:00 | 6.8°C | 4.9°C | 0 | 1 | W | 88 | 1015 |
| 02:00 | 08:00 | 5.6°C | 3.6°C | 0 | 1.1 | WNW | 90 | 1014 |
| 03:00 | 09:00 | 4.7°C | 2.4°C | 0 | 1.3 | WNW | 92 | 1014 |
| 04:00 | 10:00 | 3.3°C | -0.1°C | 0 | 2.6 | WNW | 93 | 1015 |
| 05:00 | 11:00 | 3.5°C | 0°C | 0 | 2.6 | WNW | 93 | 1014 |
| 06:00 | 12:00 | 3.8°C | 0.2°C | 0 | 2.8 | W | 92 | 1014 |
| 07:00 | 13:00 | 5.1°C | 2.2°C | 0 | 2.5 | W | 97 | 1013 |
| 08:00 | 14:00 | 9.4°C | 7.5°C | 0 | 1.5 | WSW | 82 | 1013 |
| 09:00 | 15:00 | 13.9°C | 12.2°C | 0 | 0.8 | SSW | 57 | 1013 |
| 10:00 | 16:00 | 15.8°C | 14.4°C | 0 | 0.7 | SSE | 51 | 1012 |
| 11:00 | 17:00 | 19°C | 17.8°C | 0.01 | 0.5 | W | 43 | 1012 |
| 12:00 | 18:00 | 19.3°C | 17.8°C | 0 | 0.8 | NE | 42 | 1011 |
| 13:00 | 19:00 | 20.1°C | 18.3°C | 0.01 | 1.7 | ESE | 43 | 1010 |
| 14:00 | 20:00 | 20.9°C | 18.3°C | 0 | 2.9 | ESE | 43 | 1010 |
| 15:00 | 21:00 | 20.6°C | 18.6°C | 0.51 | 1.8 | S | 40 | 1011 |
| 16:00 | 22:00 | 18.4°C | 14°C | 0.15 | 4.3 | SSW | 38 | 1009 |
| 17:00 | 23:00 | 19.9°C | 17.1°C | 0 | 2.1 | S | 34 | 1009 |
| 18:00 | 00:00 | 19.9°C | 17°C | 0 | 2.4 | SSE | 36 | 1009 |
| 19:00 | 01:00 | 18.5°C | 16.6°C | 0 | 2.4 | SSW | 56 | 1011 |
| 20:00 | 02:00 | 17.2°C | 15.2°C | 0.08 | 2.2 | WSW | 56 | 1012 |
| 21:00 | 03:00 | 14°C | 12.4°C | 0.07 | 1.7 | WNW | 69 | 1011 |
| 22:00 | 04:00 | 12.9°C | 11.2°C | 0 | 1.8 | W | 73 | 1011 |
| 23:00 | 05:00 | 11.7°C | 9.9°C | 0 | 1.8 | W | 76 | 1010 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Lyons — 40.250°, -105.250°, ERA5 grid cell center, 3.3 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 21 May 2018 specifically — not a monthly average. See the Lyons 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 (2026-07-19). Historical climate data for Lyons, United States (40.25°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 Lyons, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Lyons, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Lyons, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.