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Osawatomie climate
Typical historical weather for Osawatomie, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
14.2°C
across all months
Warmest month
31.6°C
Jul average high
Coolest month
-4.5°C
Jan average low
Annual rainfall
1022mm
total per year
Osawatomie is typically hottest in July and coolest in January, a swing of about 36.1°C across the year. About 38% of annual rainfall falls in the three wettest months (May is typically wettest, December 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 | 4.8°C · record 13–19.1°C | -4.5°C · record -21.2–-6.9°C | 55mm | 7 | 71% | 3.6 m/s | 57% | 2.4 kWh/m² |
| Feb | 8.2°C · record 17.9–24.9°C | -3°C · record -25.4–-8.2°C | 40mm | 6 | 65% | 3.8 m/s | 55% | 3.4 kWh/m² |
| Mar | 14.7°C · record 21.9–29.2°C | 3.8°C · record -17.7–-3.1°C | 88mm | 10 | 63% | 4.1 m/s | 57% | 4.2 kWh/m² |
| Apr | 19.3°C · record 26.3–30.6°C | 8.1°C · record -6.2–1.5°C | 114mm | 12 | 61% | 4.1 m/s | 54% | 5.4 kWh/m² |
| May | 24.1°C · record 29.3–33.7°C | 14.2°C · record 2.9–11.7°C | 169mm | 15 | 70% | 3.3 m/s | 58% | 5.7 kWh/m² |
| Jun | 30.3°C · record 33.7–37.3°C | 20.1°C · record 10.7–16.5°C | 93mm | 10 | 67% | 3.1 m/s | 50% | 6.8 kWh/m² |
| Jul | 31.6°C · record 34.6–38.3°C | 21.9°C · record 15.3–19.5°C | 110mm | 11 | 70% | 2.7 m/s | 48% | 6.6 kWh/m² |
| Aug | 30.4°C · record 33.9–39.1°C | 20.4°C · record 11.3–16.1°C | 89mm | 10 | 71% | 2.7 m/s | 46% | 5.9 kWh/m² |
| Sep | 28.1°C · record 32.2–37.3°C | 16.8°C · record 4.2–13.2°C | 74mm | 7 | 69% | 3 m/s | 40% | 5 kWh/m² |
| Oct | 21°C · record 29.5–32.8°C | 9.8°C · record -5.8–3.6°C | 87mm | 9 | 65% | 3.7 m/s | 42% | 3.6 kWh/m² |
| Nov | 13.6°C · record 16.9–27°C | 2.8°C · record -13.2–-2.5°C | 66mm | 7 | 67% | 3.6 m/s | 46% | 2.6 kWh/m² |
| Dec | 8.4°C · record 13.6–22.5°C | -1.6°C · record -20.8–-4.6°C | 37mm | 5 | 69% | 3.6 m/s | 52% | 2.2 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 +0.13°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 -157.45mm per decade over the same period.
2025 (the most recent year on file) averaged 14.102127273768616°C, below the 9-year baseline of 14.25°C by 0.25 standard deviations.
Typical extremes per year
Rainy days
107.6 days
≥1.0mm rain
Heavy rain days
11.9 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
82.4 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
39.1°C
19 August 2023
2023 was 1.13 SD above the 9-year average that year
Coldest day
-25.3°C
16 February 2021
2021 was 0.15 SD above the 9-year average that year
Wettest day
107.4mm
29 July 2018
2018 was 1.39 SD below the 9-year average that year
Windiest day
9m/s
29 October 2024
2024 was 1.52 SD above the 9-year average that year
See the detail: Osawatomie on 29 July 2018.
Nearby cities
Paola
Same ERA5 grid cell
Ottawa
21.8 km away
Louisburg
21.8 km away
Gardner
27.8 km away
Spring Hill
35.3 km away
Baldwin City
35.3 km away
Want a side-by-side view instead? Compare Osawatomie with another city.
Frequently asked questions about Osawatomie's climate
What is the hottest month in Osawatomie?
July is typically the warmest month in Osawatomie, with an average high of 31.6°C. January is typically the coolest, averaging -4.5°C overnight.
How much does it rain in Osawatomie?
Osawatomie gets about 1022mm of rain a year on average, with roughly 38% of it falling in the three wettest months (May is typically the wettest, December the driest).
How many extremely hot or cold days does Osawatomie have?
On average, Osawatomie sees about 0 day(s) a year at or above 40°C and about 82.4 day(s) at or below 0°C, based on 10 years of data.
Is Osawatomie getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.13°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 Osawatomie?
The hottest day on file is 19 August 2023 at 39.1°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
- Osawatomie — 38.500°, -95.000°, ERA5 grid cell center, 4.3 km from requested point
- Time zone
- America/Chicago
- 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 (2026-07-18). Historical climate data for Osawatomie, United States (38.50°N, 95.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Osawatomie, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Osawatomie, 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 Osawatomie, 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.