Home / Eureka / 30 August 2018
Eureka
United States · 30 August 2018
← 29 August 201831 August 2018 →
Average
23.2°C
low 19.8° · high 26°
Rainfall
0.9mm
dry day
Wind
1.5m/s
daily average
Humidity
81.9%
daily average
Cloud
94%
cover
Pressure
1019hPa
daily average
The temperature ranged from 19.8°C around 05:00 to 26°C around 16:00. Rain was recorded across 5 hours, from around 01:00 to 16:00 (0.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
18th percentile
Low temperature
61th percentile
Rainfall
67th percentile
Wind
13th 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 23.5°C, versus 23.2°C on this specific day.
Sun & daylight
Sunrise
06:30
Sunset
19:35
Day length
13h 5m
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 | 22.9 | 25.8 | 0.06 | 1.3 | ENE | 84 | 1020 |
| 01:00 | 06:00 | 22.7 | 25.8 | 0.1 | 0.9 | NE | 84 | 1020 |
| 02:00 | 07:00 | 22.5 | 25.8 | 0.03 | 0.6 | NNW | 86 | 1020 |
| 03:00 | 08:00 | 22.1 | 25.2 | 0 | 0.7 | N | 87 | 1020 |
| 04:00 | 09:00 | 21.7 | 24.5 | 0 | 1.2 | ENE | 90 | 1019 |
| 05:00 | 10:00 | 19.8 | 22.7 | 0 | 0.8 | NE | 98 | 1019 |
| 06:00 | 11:00 | 19.9 | 22.1 | 0 | 1.8 | E | 98 | 1020 |
| 07:00 | 12:00 | 20.3 | 22.4 | 0 | 1.8 | ENE | 96 | 1020 |
| 08:00 | 13:00 | 21.1 | 23.7 | 0 | 1.7 | ENE | 95 | 1021 |
| 09:00 | 14:00 | 21.9 | 23.9 | 0 | 2.6 | ESE | 90 | 1020 |
| 10:00 | 15:00 | 23.2 | 24.7 | 0.01 | 2.4 | SE | 77 | 1020 |
| 11:00 | 16:00 | 24.4 | 26.9 | 0.01 | 1.3 | SSE | 75 | 1021 |
| 12:00 | 17:00 | 25.3 | 28.1 | 0.12 | 1.1 | S | 72 | 1021 |
| 13:00 | 18:00 | 25.2 | 28.3 | 0.04 | 0.6 | S | 72 | 1020 |
| 14:00 | 19:00 | 25.4 | 28.8 | 0.14 | 0.3 | ESE | 71 | 1020 |
| 15:00 | 20:00 | 25.7 | 28.9 | 0.18 | 0.6 | E | 70 | 1019 |
| 16:00 | 21:00 | 26 | 28.8 | 0.15 | 1.1 | E | 68 | 1019 |
| 17:00 | 22:00 | 25.3 | 29 | 0.02 | 0.6 | ENE | 77 | 1018 |
| 18:00 | 23:00 | 25.6 | 28.8 | 0 | 1.1 | ENE | 75 | 1017 |
| 19:00 | 00:00 | 24.7 | 27.6 | 0 | 1.3 | E | 77 | 1017 |
| 20:00 | 01:00 | 23.4 | 25.2 | 0 | 2.2 | E | 77 | 1017 |
| 21:00 | 02:00 | 22.9 | 24.3 | 0 | 2.7 | ESE | 79 | 1017 |
| 22:00 | 03:00 | 22.1 | 23.6 | 0 | 2.9 | ESE | 85 | 1017 |
| 23:00 | 04:00 | 22.1 | 23.4 | 0 | 3.2 | SE | 85 | 1018 |
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
- Eureka — 38.500°, -90.750°, ERA5 grid cell center, 10.6 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 30 August 2018 specifically — not a monthly average. See the Eureka 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 Eureka, United States (38.50°N, 90.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Eureka, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Eureka, 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 Eureka, 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.