The following table shows the daily average for the period 1991 - 2020. Note these are approximate values and the only way to do it properly is take the actual daily temperatures for the period between 1991 - 2020. These averages however aren't the world standard which is the 1961- 1990. However the 1991 -2020 has much more relevance today then the older earlier version which is why it is included. These figures are a meant as a rough daily guide although they shouldn't be far off.
Although TV presenters and written articles switch between the two and often don't make it clear which average they are using. They may also at times use the final month value which isn't really correct either. The method shown here is closer to actual averages on the day concerned.
The data is derived from the Stevenson Screen and not from the Davis Weather station.
| Average Temperatures Daily Breakdown Using the 1991 - 2020 Average | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | Deg C | |
| 1 | 4.8 | 4.4 | 4.8 | 6.4 | 8.8 | 12.0 | 14.7 | 16.8 | 16.4 | 14.0 | 10.4 | 7.0 |
| 2 | 4.8 | 4.4 | 4.9 | 6.5 | 8.9 | 12.1 | 14.8 | 16.8 | 16.3 | 13.9 | 10.3 | 6.9 |
| 3 | 4.8 | 4.4 | 4.9 | 6.6 | 9.0 | 12.2 | 14.8 | 16.8 | 16.2 | 13.8 | 10.2 | 6.9 |
| 4 | 4.8 | 4.4 | 5.0 | 6.6 | 9.1 | 12.3 | 14.9 | 16.8 | 16.2 | 13.6 | 10.1 | 6.8 |
| 5 | 4.7 | 4.5 | 5.0 | 6.7 | 9.2 | 12.4 | 15.0 | 16.7 | 16.1 | 13.5 | 9.9 | 6.7 |
| 6 | 4.7 | 4.5 | 5.1 | 6.8 | 9.3 | 12.5 | 15.1 | 16.7 | 16.0 | 13.4 | 9.8 | 6.6 |
| 7 | 4.7 | 4.5 | 5.1 | 6.9 | 9.4 | 12.6 | 15.1 | 16.7 | 15.9 | 13.3 | 9.7 | 6.6 |
| 8 | 4.7 | 4.5 | 5.2 | 7.0 | 9.5 | 12.7 | 15.2 | 16.7 | 15.8 | 13.2 | 9.6 | 6.5 |
| 9 | 4.7 | 4.5 | 5.2 | 7.1 | 9.6 | 12.7 | 15.3 | 16.7 | 15.8 | 13.0 | 9.5 | 6.4 |
| 10 | 4.7 | 4.5 | 5.3 | 7.1 | 9.8 | 12.8 | 15.3 | 16.7 | 15.7 | 12.9 | 9.4 | 6.3 |
| 11 | 4.7 | 4.5 | 5.3 | 7.2 | 9.9 | 12.9 | 15.4 | 16.7 | 15.6 | 12.8 | 9.3 | 6.3 |
| 12 | 4.7 | 4.5 | 5.4 | 7.3 | 10.0 | 13.0 | 15.5 | 16.6 | 15.5 | 12.7 | 9.1 | 6.2 |
| 13 | 4.6 | 4.6 | 5.4 | 7.4 | 10.1 | 13.1 | 15.6 | 16.6 | 15.5 | 12.6 | 9.0 | 6.1 |
| 14 | 4.6 | 4.6 | 5.5 | 7.5 | 10.2 | 13.2 | 15.6 | 16.6 | 15.4 | 12.4 | 8.9 | 6.0 |
| 15 | 4.6 | 4.6 | 5.5 | 7.6 | 10.3 | 13.3 | 15.7 | 16.6 | 15.3 | 12.3 | 8.8 | 6.0 |
| 16 | 4.6 | 4.6 | 5.6 | 7.6 | 10.4 | 13.4 | 15.8 | 16.6 | 15.2 | 12.2 | 8.7 | 5.9 |
| 17 | 4.6 | 4.6 | 5.6 | 7.7 | 10.5 | 13.5 | 15.8 | 16.6 | 15.1 | 12.1 | 8.6 | 5.8 |
| 18 | 4.6 | 4.6 | 5.7 | 7.8 | 10.6 | 13.6 | 15.9 | 16.5 | 15.1 | 12.0 | 8.4 | 5.7 |
| 19 | 4.6 | 4.6 | 5.8 | 7.9 | 10.7 | 13.7 | 16.0 | 16.5 | 15.0 | 11.8 | 8.3 | 5.7 |
| 20 | 4.5 | 4.6 | 5.8 | 8.0 | 10.8 | 13.8 | 16.0 | 16.5 | 14.9 | 11.7 | 8.2 | 5.6 |
| 21 | 4.5 | 4.7 | 5.9 | 8.1 | 10.9 | 13.9 | 16.1 | 16.5 | 14.8 | 11.6 | 8.1 | 5.5 |
| 22 | 4.5 | 4.7 | 5.9 | 8.1 | 11.0 | 14.0 | 16.2 | 16.5 | 14.7 | 11.5 | 8.0 | 5.4 |
| 23 | 4.5 | 4.7 | 6.0 | 8.2 | 11.1 | 14.0 | 16.3 | 16.5 | 14.7 | 11.4 | 7.9 | 5.4 |
| 24 | 4.5 | 4.7 | 6.0 | 8.3 | 11.2 | 14.1 | 16.3 | 16.5 | 14.6 | 11.2 | 7.8 | 5.3 |
| 25 | 4.5 | 4.7 | 6.1 | 8.4 | 11.3 | 14.2 | 16.4 | 16.4 | 14.5 | 11.1 | 7.6 | 5.2 |
| 26 | 4.5 | 4.7 | 6.1 | 8.5 | 11.5 | 14.3 | 16.5 | 16.4 | 14.4 | 11.0 | 7.5 | 5.2 |
| 27 | 4.5 | 4.7* | 6.2 | 8.6 | 11.6 | 14.4 | 16.5 | 16.4 | 14.3 | 10.9 | 7.4 | 5.1 |
| 28 | 4.4 | 4.8 | 6.2 | 8.6 | 11.7 | 14.5 | 16.6 | 16.4 | 14.3 | 10.8 | 7.3 | 5.0 |
| 29 | 4.4 | 4.8 | 6.3 | 8.7 | 11.8 | 14.6 | 16.7 | 16.4 | 14.2 | 10.6 | 7.2 | 4.9 |
| 30 | 4.4 | - | 6.3 | 8.8 | 11.9 | 14.7 | 16.8 | 16.4 | 14.1 | 10.5 | 7.1 | 4.9 |
| 31 | 4.4 | - | 6.4 | - | 12.0 | - | 16.8 | 16.4 | - | 10.4 | - | 4.8 |