Bewolking — 2020
| Month | Olst-Wijhe | Deventer | Difference |
|---|---|---|---|
| Jan | 80.5 % | 80.5 % | +0.0 |
| Feb | 76.4 % | 76.4 % | +0.0 |
| Mar | 54.6 % | 54.6 % | +0.0 |
| Apr | 39 % | 39 % | +0.0 |
| May | 50.8 % | 50.8 % | +0.0 |
| Jun | 70.2 % | 70.2 % | +0.0 |
| Jul | 65.7 % | 65.7 % | +0.0 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |