Table 1.-Temperature and Precipitation Right click on this link to download this table.
_______________________________________________________________________________________________________________
| Temperature (Degrees F.) | | Precipitation
____________|_______________________________________________| |________________________________________
| | | | 2 years in | | |2 years in 10| |
| | | | 10 will have-- | | | will have-- | |
| | | |_______________________|Average | |_____________|Average |Average
|Average|Average|Average| Maximum | Minimum |number of|Average| | |number of|snowfall
Month | daily | daily | |temperature|temperature| growing | | Less | More |days with|
|maximum|minimum| | higher | lower | degree | |than--|than--|0.10 inch|
| | | | than-- | than-- | days* | | | | or more |
|_______|_______|_______|___________|___________|_________|_______|______|______|_________|________
| | | | | | | | | |
| | | | | | Units | In | In | In | Days | In
____________| | | | | | _____ | __ | __ | __ | ____ | __
Station: Colusa 2 SSW
Recorded in the period 1961-90 | | | | | | | |
____________________________________| | | | | | | |
| | | | | | | | | | |
January-----| 54.1 | 35.6 | 44.9 | 71 | 22 | 24 | 1.30 | 0.32| 2.16| 3 | 0.1
| | | | | | | | | | |
January-----| 53.8 | 36.4 | 45.1 | 70 | 23 | 172 | 3.15 | 0.92| 4.95| 5 | 0.0
February----| 61.0 | 39.9 | 50.5 | 75 | 28 | 297 | 2.54 | 0.72| 4.16| 5 | 0.0
March-------| 65.9 | 41.9 | 53.9 | 82 | 28 | 430 | 2.18 | 0.98| 3.21| 5 | 0.0
April-------| 73.4 | 44.5 | 59.0 | 91 | 32 | 570 | 0.88 | 0.16| 1.44| 2 | 0.0
May---------| 82.4 | 51.4 | 66.9 | 99 | 38 | 834 | 0.32 | 0.08| 0.80| 0 | 0.0
June--------| 90.4 | 56.4 | 73.4 | 106 | 45 | 1001 | 0.22 | 0.07| 0.59| 0 | 0.0
July--------| 95.5 | 58.6 | 77.1 | 108 | 48 | 1149 | 0.04 | 0.01| 0.27| 0 | 0.0
August------| 94.1 | 57.3 | 75.7 | 107 | 47 | 1105 | 0.07 | 0.05| 0.43| 0 | 0.0
September---| 88.8 | 53.7 | 71.2 | 103 | 42 | 937 | 0.34 | 0.07| 0.83| 0 | 0.0
October-----| 78.6 | 47.6 | 63.1 | 96 | 35 | 715 | 1.04 | 0.28| 1.92| 2 | 0.0
November----| 63.2 | 41.1 | 52.2 | 80 | 27 | 365 | 2.51 | 0.67| 3.98| 5 | 0.0
December----| 53.8 | 36.6 | 45.2 | 69 | 22 | 178 | 2.47 | 1.27| 3.68| 5 | 0.1
| | | | | | | | | | |
Yearly : | | | | | | | | | | |
| | | | | | | | | | |
Average---| 75.1 | 47.1 | 61.1 | --- | --- | --- | ---- | ---- | ---- | ---| ---
| | | | | | | | | | |
Extreme---| 113 | 15 | --- | 109 | 21 | --- | ---- | ---- | ---- | ---| ---
| | | | | | | | | | |
Total-----| --- | --- | --- | --- | --- | 7752 | 15.75 | 10.65| 20.04| 29 | 0.1
____________|_______|_______|_______|___________|___________|_________|_______|______|______|_________|________
Station : East Park Reservoir
Recorded in the period 1961-90 | | | | | | | |
____________________________________| | | | | | | |
January-----| 54.5 | 31.5 | 43.0 | 71 | 18 | 130 | 4.50 | 1.77| 6.80| 7 |
February----| 58.6 | 35.0 | 46.8 | 74 | 22 | 198 | 3.48 | 0.87| 5.89| 5 |
March-------| 61.2 | 37.2 | 49.2 | 79 | 24 | 290 | 2.44 | 0.73| 3.95| 5 |
April-------| 68.1 | 40.5 | 54.3 | 87 | 28 | 429 | 1.13 | 0.37| 1.92| 3 |
May---------| 77.7 | 47.0 | 62.4 | 97 | 32 | 693 | 0.39 | 0.11| 0.78| 1 |
June--------| 86.7 | 54.3 | 70.5 | 105 | 40 | 893 | 0.27 | 0.10| 0.73| 0 |
July--------| 93.7 | 58.8 | 76.2 | 107 | 47 | 1117 | 0.04 | 0.06| 0.32| 0 |
August------| 92.1 | 57.0 | 74.5 | 106 | 46 | 1070 | 0.15 | 0.07| 0.51| 0 |
September---| 87.2 | 52.2 | 69.7 | 104 | 40 | 890 | 0.26 | 0.09| 0.63| 0 |
October-----| 76.9 | 45.2 | 61.0 | 96 | 31 | 665 | 1.10 | 0.28| 2.12| 2 |
November----| 64.0 | 37.3 | 50.6 | 83 | 23 | 320 | 2.62 | 0.58| 4.34| 4 |
December----| 56.1 | 32.4 | 44.3 | 72 | 19 | 155 | 3.79 | 1.28| 6.03| 6 |
| | | | | | | | | | |
Yearly : | | | | | | | | | | |
| | | | | | | | | | |
Average---| 73.1 | 44.0 | 58.6 | ---- | ---- | ---- | --- | --- | --- | ---
| | | | | | | | | | |
Extreme---| 113 | 10 | --- | 109 | 16 | ---- | --- | --- | --- | ---
| | | | | | | | | | |
Total-----| --- | --- | --- | ---- | ---- | 6851 | 20.18 | 10.62| 26.93| 33 |
| | | | | | | | | | |
____________|_______|_______|_______|___________|___________|_________|_______|______|______|_________|________
*A growing degree day is a unit of heat available for plant growth. It can be calculated by adding the maximum
and minimum daily temperatures, dividing the sum by 2, and subtracting the temperature below which growth is
minimal for the principal crops in the area (Threshold: 40.0 deg. F)