The Climate of Sonoma County

2 (original pagination)

Terrain

2

Effect of Terrain on Climate

2

Temperature

2

Freeze Data

3

Precipitation

3

Snowfall

4

Evapotranspiration

4

Evaporation

5

Wind

5

Relative Humidity

5

Sunshine

5

Tables

1. Weather Reporting Stations Used in this Summary.  1a  1b  1c
2. Temperature Means and Extremes.  2a  2b  2c
3. Frequency of Daily Maximum Temperatures--Santa Rosa.
4. Frequency of Daily Minimum Temperatures--Santa Rosa.
5. Freeze Data.  5a  5b
6. Average Monthly and Seasonal Precipitation.  6a  6b
7. Frequency of Daily Precipitation Amounts--Santa Rosa.
8. Annual Precipitation Probability.  8a  8b 8c
9. Average Monthly and Seasonal Snowfall.  9a  9b
10. Evapotranspiration Data.
11. Frequency of Wind Direction and Speed--Santa Rosa.
12. Frequency of Specified Sky Conditions--Santa Rosa.

Appendix I

Maps/List of Illustrations

1. Locations of Weather Reporting Stations.
2. Annual Average Temperature (°F)
3. January Mean Minimum Temperature (°F)
4. January Mean Maximum Temperature (°F)
5. Lowest Observed Temperature (°F)
6. July Mean Maximum Temperature (°F)
7. July Mean Minimum Temperature (°F)
8. Highest Observed Temperature (°F)
9. Average Date of last 32° Freeze in Spring (Date)
10. Average Date of First 32° Freeze in Fall (Date)
11. Average Length of 32° Growing Season (Days)
12. Average Date of Last 28° Freeze in Spring (Date)
13. Average Date of First 28° Freeze in Fall (Date)
14. Average Length of 28° Growing Season (Days)
15. Average Seasonal Precipitation (Inches)
16. Annual Precipitation Will Be Less Than This Amount 1 Year in 10 (Inches)
17. Annual Precipitation Will Be Less Than This Amount 1 Year in 4 (Inches)
18. Annual Precipitation Will Be Less Than This Amount 1 Year in 3 (Inches)
19. Annual Precipitation Will Be Less Than This Amount 2 Years in 3 (Inches)
20. Annual Precipitation Will Be Less Than This Amount 3 Years in 4 (Inches)
21. Annual Precipitation Will Be Less Than This Amount 9 Year in 10 (Inches)
22. Annual Precipitation Will Be Less Than This Amount 19 Years in 20 (Inches)
23. Average Seasonal Snowfall (Inches)
24. Average Potential Evapotranspiration (Inches)
25. Average Growing Season Evapotranspiration (Inches)
26. Average Annual Dry-Farmed Evapotranspiration, Assuming 4 Inches Plant-Available Moisture Storage in Root one (Inches)
27. Average Growing Season Dry-Farmed Evapotranspiration, Assuming 4 Inches Plant-Available Moisture Storage in Root one (Inches)
28. Average Date When Stored Soil Moisture Supply is Exhausted (Date)

Appendix II