Home / Romulus / 9 January 2017
Romulus
United States · 9 January 2017
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Average
-5.4°C
low -9.6° · high -2.2°
Rainfall
0.4mm
dry day
Wind
4.5m/s
daily average
Humidity
58.6%
daily average
Cloud
97%
cover
Pressure
1030hPa
daily average
The temperature ranged from -9.6°C around 02:00 to -2.2°C around 15:00. Rain was recorded for one hour, around 06:00 (0.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
26th percentile
Low temperature
24th percentile
Rainfall
57th percentile
Wind
71th 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 -5.4°C on this specific day.
Sun & daylight
Sunrise
08:02
Sunset
17:20
Day length
9h 18m
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 | -9.1 | -15.4 | 0 | 4.1 | SSW | 63 | 1037 |
| 01:00 | 06:00 | -9.4 | -15.9 | 0 | 4.4 | SSW | 61 | 1036 |
| 02:00 | 07:00 | -9.6 | -16.1 | 0 | 4.4 | SSW | 60 | 1036 |
| 03:00 | 08:00 | -9.4 | -16.1 | 0.02 | 4.7 | SSW | 58 | 1035 |
| 04:00 | 09:00 | -9.3 | -16.2 | 0.04 | 4.9 | S | 58 | 1033 |
| 05:00 | 10:00 | -8.6 | -15.1 | 0.06 | 4.5 | S | 64 | 1033 |
| 06:00 | 11:00 | -8.5 | -15.2 | 0.1 | 4.9 | S | 63 | 1032 |
| 07:00 | 12:00 | -8.2 | -15.2 | 0.05 | 5.1 | S | 61 | 1031 |
| 08:00 | 13:00 | -7.9 | -15.2 | 0.03 | 5.7 | SSW | 58 | 1030 |
| 09:00 | 14:00 | -6.9 | -13.5 | 0.01 | 4.6 | SSW | 55 | 1031 |
| 10:00 | 15:00 | -5.7 | -12.5 | 0 | 5 | SSW | 53 | 1030 |
| 11:00 | 16:00 | -4.9 | -11.9 | 0 | 5.3 | SW | 53 | 1030 |
| 12:00 | 17:00 | -3.3 | -10.3 | 0 | 5.3 | SW | 51 | 1029 |
| 13:00 | 18:00 | -3 | -9.6 | 0 | 4.9 | SW | 53 | 1028 |
| 14:00 | 19:00 | -2.5 | -8.7 | 0 | 4.5 | SW | 53 | 1028 |
| 15:00 | 20:00 | -2.2 | -8.1 | 0 | 4.1 | SW | 54 | 1028 |
| 16:00 | 21:00 | -2.4 | -7.9 | 0 | 3.6 | SSW | 55 | 1028 |
| 17:00 | 22:00 | -2.8 | -7.8 | 0 | 2.8 | SSW | 59 | 1028 |
| 18:00 | 23:00 | -3.1 | -8.6 | 0 | 3.4 | S | 60 | 1027 |
| 19:00 | 00:00 | -2.9 | -8.6 | 0 | 3.8 | S | 60 | 1028 |
| 20:00 | 01:00 | -3 | -8.8 | 0 | 4 | S | 61 | 1027 |
| 21:00 | 02:00 | -2.8 | -8.8 | 0.02 | 4.3 | S | 62 | 1027 |
| 22:00 | 03:00 | -2.6 | -8.9 | 0.03 | 4.8 | S | 63 | 1025 |
| 23:00 | 04:00 | -2.5 | -8.7 | 0.07 | 4.8 | S | 66 | 1025 |
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 9 January 2017 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Romulus, 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 Romulus, 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.