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Oakland City climate
Typical historical weather for Oakland City, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Data last updated: 31 December 2025
Want today's actual conditions instead? See the current forecast for Oakland City. Planning a garden? See the gardening & growing season planner. Or browse the 365-day climate calendar.
Annual average
14.8°C
across all months
Warmest month
30.9°C
Jul average high
Coolest month
-2.4°C
Jan average low
Annual rainfall
1306mm
total per year
Oakland City is typically hottest in July and coolest in January, a swing of about 33.3°C across the year. About 32% of annual rainfall falls in the three wettest months (March is typically wettest, September driest).
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
| Month | Avg high | Avg low | Rainfall | Wet days | Humidity | Wind | Cloud | Solar |
|---|---|---|---|---|---|---|---|---|
| Jan | 5.3°C · record 14.6°C–20.4°C | -2.4°C · record -20.8°C–-5.9°C | 104mm | 10 | 71% | 3.5 m/s | 67% | 2.1 kWh/m² |
| Feb | 9.4°C · record 17.9°C–25.1°C | -0.1°C · record -15.8°C–-8.2°C | 121mm | 10 | 68% | 3.6 m/s | 65% | 3 kWh/m² |
| Mar | 14.9°C · record 18.8°C–28°C | 4.7°C · record -12.6°C–-2°C | 148mm | 12 | 61% | 3.8 m/s | 61% | 4.1 kWh/m² |
| Apr | 19.9°C · record 27.5°C–30.2°C | 9.2°C · record -3.3°C–2.7°C | 137mm | 12 | 60% | 3.7 m/s | 60% | 5.3 kWh/m² |
| May | 25°C · record 30.6°C–33.2°C | 15.4°C · record 2.5°C–11.1°C | 135mm | 15 | 66% | 3.2 m/s | 64% | 5.7 kWh/m² |
| Jun | 29.8°C · record 33.1°C–36.3°C | 20.1°C · record 9.7°C–15.4°C | 112mm | 10 | 65% | 2.7 m/s | 53% | 6.5 kWh/m² |
| Jul | 30.9°C · record 33.3°C–37.1°C | 22.1°C · record 14.3°C–20.8°C | 110mm | 12 | 71% | 2.3 m/s | 54% | 6.3 kWh/m² |
| Aug | 29.8°C · record 32.8°C–36.5°C | 20.5°C · record 10.3°C–16.7°C | 90mm | 10 | 71% | 2.4 m/s | 52% | 5.7 kWh/m² |
| Sep | 28.1°C · record 31.5°C–35.3°C | 17°C · record 5.7°C–11.4°C | 75mm | 7 | 68% | 2.6 m/s | 41% | 4.9 kWh/m² |
| Oct | 21.6°C · record 26.5°C–34.7°C | 10.6°C · record -3.2°C–5.4°C | 86mm | 8 | 67% | 3.2 m/s | 46% | 3.6 kWh/m² |
| Nov | 13.5°C · record 16.8°C–28.7°C | 3.7°C · record -11.5°C–-2.6°C | 89mm | 9 | 68% | 3.3 m/s | 53% | 2.5 kWh/m² |
| Dec | 8.6°C · record 15.6°C–22.2°C | 0.4°C · record -21.9°C–-4.3°C | 99mm | 11 | 71% | 3.4 m/s | 65% | 1.9 kWh/m² |
"Avg high"/"Avg low" is the mean daily high/low for that month, averaged across every year on file. The "record" figure alongside it is a different statistic — the single hottest (or coldest) hour ever recorded during that month across all years — so it can sit above or below the average and does not describe the average's year-to-year spread. A "wet day" is any day with at least 1.0mm of rain.
Year to year
Annual average temperature, 2016–2025.
Across these 10 years, the annual average has moved by about 0°C per decade. That’s a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
Annual rainfall has moved by about -2.13mm per decade over the same period.
2025 (the most recent year on file) averaged 14.5°C, below the 9-year baseline of 14.9°C by 0.92 standard deviations.
Typical extremes per year
Rainy days
126 days
≥1.0mm rain
Heavy rain days
17.4 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
64.8 days
daily low ≤0°C
Averaged across 10 years on file. Thresholds match PastClimate's data pipeline definitions — see data & sources.
Records on file
Ranked across 10 years of data currently on file (2016–2025).
Hottest day
37.1°C
22 July 2017
2017 was 1.28 SD above the 9-year average that year
Coldest day
-21.9°C
23 December 2022
2022 was 1.61 SD below the 9-year average that year
Wettest day
70.2mm
3 March 2023
2023 was 1.48 SD above the 9-year average that year
Windiest day
7.7m/s
10 January 2017
2017 was 1.28 SD above the 9-year average that year
See the detail: Oakland City on 3 March 2023.
Nearby cities
Frequently asked questions about Oakland City's climate
What is the hottest month in Oakland City?
July is typically the warmest month in Oakland City, with an average high of 30.9°C. January is typically the coolest, averaging -2.4°C overnight.
How much does it rain in Oakland City?
Oakland City gets about 1306mm of rain a year on average, with roughly 32% of it falling in the three wettest months (March is typically the wettest, September the driest).
How many extremely hot or cold days does Oakland City have?
On average, Oakland City sees about 0 day(s) a year at or above 40°C and about 64.8 day(s) at or below 0°C, based on 10 years of data.
Is Oakland City getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about -0.03°C per decade. That's a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
What is the hottest day on record for Oakland City?
The hottest day on file is 22 July 2017 at 37.1°C, out of 10 year(s) searched.
Data & provenance
↓ Download monthly CSVData 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
- Oakland City — 38.250°, -87.250°, ERA5 grid cell center, 12.9 km from requested point
- Time zone
- America/Indiana/Petersburg
- What's shown here
- Monthly and annual averages, and dated extreme-value records, derived from an hourly base record.
- 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 (2026-07-21). Historical climate data for Oakland City, United States (38.25°N, 87.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Oakland City, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Oakland City, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Oakland City, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.