Home / Romulus / 12 January 2018
Romulus
United States · 12 January 2018
← 11 January 201813 January 2018 →
Average
-0.8°C
low -9.8° · high 14.2°
Rainfall
14.4mm
rain recorded
Wind
6.6m/s
daily average
Humidity
81.9%
daily average
Cloud
100%
cover
Pressure
1014hPa
daily average
The temperature ranged from -9.8°C around 23:00 to 14.2°C around 01:00. Rain was recorded across 18 hours, from around 00:00 to 17:00 (14.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
99th percentile
Low temperature
23th percentile
Rainfall
95th percentile
Wind
96th 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 -2.4°C, versus -0.8°C on this specific day.
Sun & daylight
Sunrise
08:01
Sunset
17:23
Day length
9h 22m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Detroit.
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 | 13.7 | 11.1 | 0.18 | 5.1 | SSW | 96 | 1006 |
| 01:00 | 06:00 | 14.2 | 12.5 | 0.17 | 4 | SW | 97 | 1005 |
| 02:00 | 07:00 | 13.4 | 11.7 | 0.37 | 3.8 | W | 97 | 1005 |
| 03:00 | 08:00 | 11.6 | 8.9 | 0.51 | 4.4 | WNW | 97 | 1006 |
| 04:00 | 09:00 | 8.6 | 4.4 | 0.67 | 5.4 | NW | 95 | 1006 |
| 05:00 | 10:00 | 4.5 | 0.2 | 0.67 | 4.1 | NW | 94 | 1006 |
| 06:00 | 11:00 | 4 | -0.7 | 0.4 | 4.7 | NW | 95 | 1007 |
| 07:00 | 12:00 | 3.4 | -2.3 | 1.31 | 6 | NNW | 95 | 1008 |
| 08:00 | 13:00 | 1 | -6 | 2.46 | 7.2 | NNW | 93 | 1010 |
| 09:00 | 14:00 | -1.3 | -8.3 | 2.57 | 6.8 | NNW | 93 | 1011 |
| 10:00 | 15:00 | -3 | -10.9 | 1.6 | 7.6 | NNW | 89 | 1013 |
| 11:00 | 16:00 | -3.5 | -11.4 | 1.18 | 7.4 | NNW | 86 | 1014 |
| 12:00 | 17:00 | -4.5 | -12.5 | 0.85 | 7.4 | NNW | 81 | 1015 |
| 13:00 | 18:00 | -4.9 | -13.2 | 0.49 | 7.7 | N | 80 | 1015 |
| 14:00 | 19:00 | -5.6 | -14 | 0.26 | 7.8 | N | 80 | 1015 |
| 15:00 | 20:00 | -6.3 | -14.6 | 0.25 | 7.5 | N | 79 | 1016 |
| 16:00 | 21:00 | -6.7 | -14.8 | 0.21 | 7.1 | N | 75 | 1018 |
| 17:00 | 22:00 | -7.2 | -15.1 | 0.16 | 6.7 | N | 66 | 1020 |
| 18:00 | 23:00 | -7.5 | -15.9 | 0.09 | 7.5 | N | 66 | 1020 |
| 19:00 | 00:00 | -7.5 | -16.5 | 0.03 | 8.1 | N | 64 | 1021 |
| 20:00 | 01:00 | -7.8 | -16.9 | 0 | 8.3 | N | 63 | 1022 |
| 21:00 | 02:00 | -8.5 | -17.5 | 0 | 8.1 | N | 61 | 1023 |
| 22:00 | 03:00 | -9.2 | -18.1 | 0 | 7.9 | N | 61 | 1024 |
| 23:00 | 04:00 | -9.8 | -19.2 | 0 | 8.6 | N | 61 | 1022 |
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
- Romulus — 42.250°, -83.500°, ERA5 grid cell center, 9.1 km from requested point
- Time zone
- America/Detroit
- What's shown here
- The hourly and daily record for 12 January 2018 specifically — not a monthly average. See the Romulus 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 Romulus, United States (42.25°N, 83.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Romulus, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Romulus, 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 Romulus, 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.