Climate Overview
The climate in Arroyo Seco is cool. The average annual temperature is 8°C and approximately 371mm of precipitation falls per year. July is the wettest month, receiving around 46mm of rainfall. Arroyo Seco is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 105cm accumulating over the season.
Temperature
Arroyo Seco has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.
Precipitation
Arroyo Seco is a quite dry location, receiving approximately 371mm of precipitation annually, which averages out to around 31mm per month. The wettest month is July, averaging 46mm of rainfall. August and March also tend to see above-average precipitation. The driest month is April, with just 23mm. That's 23mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 105cm accumulating over the season. January typically sees the most snow at around 23cm.
Wind
Arroyo Seco is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 21km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in January, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in Arroyo Seco, which began on March 20, 2026. Arroyo Seco is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near -11°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from -4 to 19°C. Rainfall is relatively light, with around 91mm over the season and a monthly average of 30mm. Winds are moderate at around 19km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 10 to 27°C. Rainfall is relatively light, with around 110mm over the season and a monthly average of 37mm. Winds are generally light, averaging 14km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -4 to 23°C. Rainfall is relatively light, with around 80mm over the season and a monthly average of 27mm. Expect around 16cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -11 to 4°C. Rainfall is relatively light, with around 90mm over the season and a monthly average of 30mm. Expect around 62cm of snow accumulation during this period. Winds are generally light, averaging 13km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Arroyo Seco is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 34mm per month. By contrast, January can be quite cold with temperatures dropping to -11°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Arroyo Seco based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
