2010 O Scale National Convention

Weather Information

• The coastal climate applies to the coast and to San Fransisco.
  During the time of the convention, this weather normally is cool (50s - 60s) and breezy to windy day and night. There may be low clouds during most of the day. Note that the city of San Francisco experiences this climate; to quote Mark Twain: "The coldest winter of my life was summer in San Francisco."
  

• The bay climate is low humidity and has three phases: morning, mid-day through evening, and night.
  Morning may be have low clouds with temperatures in the high 50s. By mid-day the low clouds will have been dissipated by the sun, and it will warm up to the mid-80s. By mid-afternoon a strong cool northerly breeze will start to blow and the temperature will drop to the point where if you are sitting outside in the shade you will be grateful for a warm sweater or jacket. By dark the breeze usually stops and it is comfortable outside without a sweater/jacket.
  

• The valley climate is much warmer that the bay climate, with daytime temperatures in the high 90s - low 100s.
  Sacramento and Fresno are in the valley climate. If you plan to visit the layouts in Mariposa, or even drive from the Sierra Nevada mountains across the state to Santa Clara, you will pass through the valley climate. In the east-west direction, the width of the valley climate area is approximately 100-150 miles.
  

The possibility of rain in June is a chance of 1 in 1000! The possibility of rain in July is zero! The amount of precipitation in June is approximately 1/100 of an inch for the entire month.

For current and forecast weather conditions, click here. You will see a screen of weather information for Santa Clara. For historical weather information, on that screen scroll down to History & Almanac just below which is the link to Seasonal Weather Averages. The resulting screen shows the average temperatures and rainfall over a year. Note there is no rainfall in July.

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