San Luis Río Colorado Climate by Month
San Luis Río Colorado, Sonora, Mexico
Very hot summers and mild winters, with almost no rain.
The climate in San Luis Río Colorado is one of very hot summers and mild winters, with almost no rain. Afternoon highs range from 70°F (21°C) in December to 108°F (42°C) in July, and December nights average 42°F (6°C). It gets only 2.8 in (71 mm) of rain a year. September to July are almost completely dry. The air is dry, averaging 38% relative humidity.
- Warmest month
- 108°F(42°C)
- Average high, July
- Coldest nights
- 42°F(6°C)
- Average low, December
- Rain per year
- 2.8 in(71 mm)
- No clear rainy season
- Humidity
- 38%
- Sunniest: June
Best and worst months in San Luis Río Colorado
Best for weatherThe most comfortable weather comes in February, with highs around 75°F (24°C) and almost no rain.
Least pleasantJuly and August are the least pleasant; July is the hottest, with highs of 108°F (42°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in February.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
San Luis Río Colorado weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 71°F(22°C) | 43°F(6°C) | 0.3 in(8 mm) | 44% | 3.3 |
| FebFebruaryBest | 75°F(24°C) | 45°F(7°C) | 0.4 in(9 mm) | 45% | 4.0 |
| MarMarch | 82°F(28°C) | 50°F(10°C) | 0.3 in(8 mm) | 41% | 5.4 |
| AprApril | 89°F(32°C) | 55°F(13°C) | 0.1 in(2 mm) | 34% | 6.5 |
| MayMay | 97°F(36°C) | 63°F(17°C) | 0.0 in(1 mm) | 31% | 7.3 |
| JunJune | 105°F(41°C) | 70°F(21°C) | 0.0 in(1 mm) | 31% | 7.6 |
| JulJuly | 108°F(42°C) | 77°F(25°C) | 0.2 in(4 mm) | 35% | 7.2 |
| AugAugust | 107°F(41°C) | 78°F(25°C) | 0.4 in(10 mm) | 39% | 6.7 |
| SepSeptember | 102°F(39°C) | 73°F(23°C) | 0.3 in(8 mm) | 38% | 5.8 |
| OctOctober | 92°F(33°C) | 61°F(16°C) | 0.3 in(7 mm) | 36% | 4.8 |
| NovNovember | 81°F(27°C) | 50°F(10°C) | 0.2 in(4 mm) | 38% | 3.6 |
| DecDecember | 70°F(21°C) | 42°F(6°C) | 0.4 in(9 mm) | 46% | 3.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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