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Saint Rose climate
Typical historical weather for Saint Rose, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
21.5°C
across all months
Warmest month
31.4°C
Aug average high
Coolest month
8.7°C
Jan average low
Annual rainfall
1550mm
total per year
Saint Rose is typically hottest in August and coolest in January, a swing of about 22.7°C across the year. About 36% of annual rainfall falls in the three wettest months (August is typically wettest, November 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 | 16.1°C · record 21.3–26.6°C | 8.7°C · record -5.5–3.3°C | 110mm | 11 | 74% | 4.2 m/s | 55% | 3 kWh/m² |
| Feb | 19.4°C · record 24–26.8°C | 12°C · record -3.7–7.9°C | 107mm | 11 | 77% | 4.1 m/s | 59% | 3.5 kWh/m² |
| Mar | 22.2°C · record 25.8–29.5°C | 15.1°C · record 2.1–9.6°C | 114mm | 12 | 74% | 4.1 m/s | 57% | 4.6 kWh/m² |
| Apr | 24.6°C · record 27.2–29.7°C | 17.7°C · record 8.6–12.6°C | 104mm | 12 | 74% | 4.1 m/s | 53% | 5.7 kWh/m² |
| May | 28.2°C · record 29.8–33°C | 22°C · record 13.9–20.1°C | 133mm | 12 | 76% | 3.4 m/s | 53% | 6 kWh/m² |
| Jun | 30.7°C · record 31.5–35.2°C | 25.1°C · record 20.6–24.1°C | 159mm | 16 | 78% | 2.9 m/s | 58% | 5.8 kWh/m² |
| Jul | 31.2°C · record 33–35.8°C | 26°C · record 23–25.2°C | 177mm | 22 | 81% | 2.5 m/s | 63% | 5.6 kWh/m² |
| Aug | 31.4°C · record 32.5–37.9°C | 26°C · record 23.2–24.8°C | 216mm | 21 | 80% | 2.6 m/s | 62% | 5.3 kWh/m² |
| Sep | 30°C · record 31–34.7°C | 24.2°C · record 14.3–23.8°C | 134mm | 13 | 77% | 2.8 m/s | 46% | 4.9 kWh/m² |
| Oct | 26.3°C · record 28.8–32.7°C | 19.5°C · record 7.8–14.3°C | 98mm | 8 | 75% | 3.4 m/s | 41% | 4.4 kWh/m² |
| Nov | 21.3°C · record 23.8–28.3°C | 14°C · record 0.8–9.6°C | 92mm | 8 | 76% | 3.7 m/s | 50% | 3.3 kWh/m² |
| Dec | 18.1°C · record 21.9–26.6°C | 11.2°C · record -3–6.2°C | 105mm | 11 | 79% | 3.8 m/s | 59% | 2.6 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 +0.36°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 -322.63mm per decade over the same period.
2025 (the most recent year on file) averaged 21.50719157179743°C, below the 9-year baseline of 21.57°C by 0.17 standard deviations.
Typical extremes per year
Rainy days
156.7 days
≥1.0mm rain
Heavy rain days
19.6 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
2.1 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
37.9°C
27 August 2023
2023 was 3.14 SD above the 9-year average that year
Coldest day
-5.5°C
17 January 2018
2018 was 0.59 SD below the 9-year average that year
Wettest day
182.5mm
29 August 2021
2021 was 1.37 SD below the 9-year average that year
Windiest day
15.6m/s
29 August 2021
2021 was 1.37 SD below the 9-year average that year
See the detail: Saint Rose on 29 August 2021.
Nearby cities
Metairie Terrace
Same ERA5 grid cell
Metairie
Same ERA5 grid cell
Kenner
Same ERA5 grid cell
River Ridge
Same ERA5 grid cell
Luling
Same ERA5 grid cell
Destrehan
Same ERA5 grid cell
Want a side-by-side view instead? Compare Saint Rose with another city.
Frequently asked questions about Saint Rose's climate
What is the hottest month in Saint Rose?
August is typically the warmest month in Saint Rose, with an average high of 31.4°C. January is typically the coolest, averaging 8.7°C overnight.
How much does it rain in Saint Rose?
Saint Rose gets about 1550mm of rain a year on average, with roughly 36% of it falling in the three wettest months (August is typically the wettest, November the driest).
How many extremely hot or cold days does Saint Rose have?
On average, Saint Rose sees about 0 day(s) a year at or above 40°C and about 2.1 day(s) at or below 0°C, based on 10 years of data.
Is Saint Rose getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.36°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 Saint Rose?
The hottest day on file is 27 August 2023 at 37.9°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
- Saint Rose — 30.000°, -90.250°, ERA5 grid cell center, 9.2 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 Saint Rose, United States (30.00°N, 90.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Saint Rose, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Saint Rose, 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 Saint Rose, 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.