ClimateForecastDecemberJanuary >>

Arroyo Grande (CA) Climate by Month

Arroyo Grande maintains a fairly consistent pleasant average temperature. It maintains fairly dry conditions year-round. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Arroyo Grande temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 23°C in September to a moderate 18°C in December. Nighttime temperatures can drop, with averages reaching 6°C in December.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Arroyo Grande's climate is marked by below-average rainfall, accumulating 317 mm of precipitation yearly. The seasons in Arroyo Grande, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 74 mm of precipitation. This rainfall is distributed across 9 rainy days. In contrast, the driest month, August, experiences much less rainfall, totaling 0.2 mm over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Arroyo Grande, summer days are longer and more sunny, with daily sunshine hours peaking at 11.7 hours in July. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 6.9 hours.

Monthly hours of sunshine

Data from: Paso Robles, the United States of America (57 KM, 35 Miles).

Daily hours of sunshine

Data from: Paso Robles, the United States of America (57 KM, 35 Miles).

The best time of year to visit Arroyo Grande in the United States of America

During the months of May, June, July, August, September, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Arroyo Grande have a dry season?
    Yes, the months of May, June, July, August and September are very dry.
  • Which is the warmest month in Arroyo Grande?
    September has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Arroyo Grande?
    The coldest month is December with an average maximum temperature of 18°C.
  • Which is the wettest month in Arroyo Grande?
    December tops the wettest month list with 74 mm of rainfall.
  • Which is the driest month in Arroyo Grande?
    August is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Arroyo Grande?
    July is the sunniest month with an average of 352 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Arroyo Grande (CA)

    Tue   Dec 03
    20°C | 6°C
    SW 11 km/h
    broken clouds and no rain

    broken clouds and no rain

    Wed   Dec 04
    22°C | 6°C
    SW 11 km/h
    clear and no rain

    clear and no rain

    Thu   Dec 05
    23°C | 7°C
    N 18 km/h
    almost clear and no rain

    almost clear and no rain