Climate averages 1991–2020
Whitby weather
in June.
A warm, wet month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Whitby: daytime highs average 22.0°C and nights cool to about 14.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 93 mm of rain on roughly 11 days, which makes June a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 15 h 24 min on an average June day.
The nearest other city in this atlas is Oshawa (7 km away). In June its highs average 21.7°C, about as warm as Whitby, with 89 mm of rain.
Among the 86 cities listed in Canada, Whitby ranks joint 49th of 86 for the warmest June highs and joint 43rd of 86 for the driest June (rainfall, lowest first). The mean June high of those 86 cities is 21.4°C; Whitby is 0.5°C warmer than that mean.
From June to July, average highs rise by 3.4°C to 25.3°C, and monthly rainfall falls from 93 mm to 87 mm.
The annual picture
June in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Whitby climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.5°C-8.5°C | -8.5°C | 64 | 10.6 | 9.39 h |
| February | -1.0°C-8.8°C | -8.8°C | 52 | 8.3 | 10.410 h |
| March | 3.4°C-4.1°C | -4.1°C | 61 | 10.3 | 11.912 h |
| April | 9.9°C2.3°C | 2.3°C | 84 | 11.5 | 13.413 h |
| May | 16.4°C8.8°C | 8.8°C | 80 | 11.2 | 14.715 h |
| June, selected | 22.0°C14.8°C | 14.8°C | 93 | 11.4 | 15.415 h |
| July | 25.3°C18.2°C | 18.2°C | 87 | 11.1 | 15.115 h |
| August | 24.8°C18.0°C | 18.0°C | 85 | 10.1 | 14.014 h |
| September | 21.0°C14.5°C | 14.5°C | 80 | 9.4 | 12.613 h |
| October | 14.0°C8.2°C | 8.2°C | 83 | 11.4 | 11.011 h |
| November | 7.2°C1.9°C | 1.9°C | 73 | 10.6 | 9.710 h |
| December | 1.8°C-3.8°C | -3.8°C | 65 | 10.7 | 9.09 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Oshawa in JuneCanada · 7 kmHigh 21.7°C · Low 14.6°C · 89 mm rain
- Ajax in JuneCanada · 9 kmHigh 22.1°C · Low 14.8°C · 76 mm rain
- Pickering in JuneCanada · 16 kmHigh 21.6°C · Low 14.0°C · 93 mm rain
- Markham in JuneCanada · 27 kmHigh 22.8°C · Low 14.1°C · 77 mm rain
- Thornhill in JuneCanada · 40 kmHigh 22.4°C · Low 14.2°C · 77 mm rain
- Richmond Hill in JuneCanada · 40 kmHigh 23.0°C · Low 13.7°C · 77 mm rain
- Toronto in JuneCanada · 42 kmHigh 21.5°C · Low 14.2°C · 77 mm rain
- Vaughan in JuneCanada · 46 kmHigh 22.8°C · Low 13.8°C · 77 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Whitby) is explained once on the Whitby year overview and on the Sources, method and limits page.