Climate averages 1991–2020
Río Cuarto weather
in September.
A mild, fairly dry month: the 8th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Río Cuarto: daytime highs average 20.3°C and nights cool to about 9.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 39 mm of rain on roughly 5 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 52 min on an average September day.
The nearest other city in this atlas is Villa Mercedes, Argentina (119 km away). In September its highs average 20.9°C, 0.7°C warmer than Río Cuarto, with 36 mm of rain.
Among the 67 cities listed in Argentina, Río Cuarto ranks 25th of 67 for the warmest September highs and 18th of 67 for the driest September (rainfall, lowest first). The mean September high of those 67 cities is 19.4°C; Río Cuarto is 0.9°C warmer than that mean.
From September to October, average highs rise by 2.7°C to 23.0°C, and monthly rainfall rises from 39 mm to 84 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Río Cuarto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C19.0°C | 19.0°C | 96 | 10.3 | 14.114 h |
| February | 27.1°C17.8°C | 17.8°C | 89 | 8.7 | 13.313 h |
| March | 25.4°C16.3°C | 16.3°C | 88 | 9.4 | 12.312 h |
| April | 21.9°C12.8°C | 12.8°C | 67 | 7.1 | 11.311 h |
| May | 18.3°C9.4°C | 9.4°C | 34 | 4.8 | 10.410 h |
| June | 15.6°C6.1°C | 6.1°C | 14 | 2.5 | 10.010 h |
| July | 14.8°C4.9°C | 4.9°C | 11 | 2.4 | 10.210 h |
| August | 17.8°C6.8°C | 6.8°C | 20 | 2.7 | 10.911 h |
| September, selected | 20.3°C9.3°C | 9.3°C | 39 | 4.9 | 11.912 h |
| October | 23.0°C12.5°C | 12.5°C | 84 | 9.4 | 12.913 h |
| November | 26.1°C15.4°C | 15.4°C | 88 | 10.3 | 13.814 h |
| December | 28.3°C17.9°C | 17.9°C | 107 | 10.7 | 14.314 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Villa Mercedes, Argentina in SeptemberArgentina · 119 kmHigh 20.9°C · Low 8.9°C · 36 mm rain
- Villa María in SeptemberArgentina · 131 kmHigh 21.0°C · Low 10.4°C · 42 mm rain
- San Luis in SeptemberArgentina · 184 kmHigh 21.3°C · Low 9.4°C · 30 mm rain
- Córdoba in SeptemberArgentina · 192 kmHigh 21.3°C · Low 9.2°C · 37 mm rain
- Venado Tuerto in SeptemberArgentina · 232 kmHigh 20.2°C · Low 9.5°C · 58 mm rain
- Rafaela in SeptemberArgentina · 341 kmHigh 21.8°C · Low 11.0°C · 57 mm rain
- Gobernador Gálvez in SeptemberArgentina · 346 kmHigh 20.4°C · Low 10.2°C · 61 mm rain
- Rosario in SeptemberArgentina · 347 kmHigh 20.4°C · Low 10.1°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Río Cuarto) is explained once on the Río Cuarto year overview and on the Sources, method and limits page.