Weather forecast for tomorrow
Wednesday, Jun 18.
5:12 am
8:55 pm
EDT
8:55 pm
EDT
AM Clouds / PM Sun
86°F / 66°F
- Wind: 9mph WSW
- Humidity: 66%
- Precip. probability: 24%
- Precipitation: 0.12"
- UV index: 5
Tomorrow, on Wednesday, June 18, the morning will be gray and overcast, but skies will clear gradually, leading to a pleasant afternoon.
Minimal precipitation is predicted. The forecasted temperature range extends from a high of a tropical 30°C to a low of a breezy 19°C.
The maximum heat index, which adjusts the air temperature based on humidity, is computed to be a blazing 34°C. Note that heat index values are valued for light wind and location in the shade.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:12 am and sunset at 8:55 pm; tomorrow's daylight will last for 15h and 44min.
Minimal precipitation is predicted. The forecasted temperature range extends from a high of a tropical 30°C to a low of a breezy 19°C.
The maximum heat index, which adjusts the air temperature based on humidity, is computed to be a blazing 34°C. Note that heat index values are valued for light wind and location in the shade.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:12 am and sunset at 8:55 pm; tomorrow's daylight will last for 15h and 44min.
Frequently asked questions
What is the weather forecast for Ottawa for tomorrow?
On Wednesday, gray skies in the morning will gradually clear, leading to a warmer, sunnier afternoon.
Will it rain tomorrow?
Tomorrow, there is a low probability of minimal rainfall in Ottawa.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature in Ottawa will be 30°C, while the lowest temperature will be 19°C. The maximum heat index, which modifies the air temperature to account for humidity, is calculated to be 34°C.
The highest temperature will be significantly higher than the average maximum of 21.6°C in June. The lowest temperature will be also significantly higher than the average low of 11.3°C.
The highest temperature will be significantly higher than the average maximum of 21.6°C in June. The lowest temperature will be also significantly higher than the average low of 11.3°C.
What time are sunrise and sunset tomorrow?
On Wednesday, in Ottawa, sunrise will be at 5:12 am and sunset at 8:55 pm (EDT).
How long will the day be tomorrow?
In Ottawa, the length of the day tomorrow will be 15h and 44min.
Hourly weather forecast
12 am
- 72°F
- Feels like:
72°F
Mostly Cloudy
- Wind: 9mph SSW
- Pressure: 29.77"Hg
- Humidity: 83%
- Precip. probability: 9%
- Precipitation: 0"
- Visibility: 7mi
2 am
- 70°F
- Feels like:
72°F
Mostly Cloudy
- Wind: 9mph SSW
- Pressure: 29.77"Hg
- Humidity: 89%
- Precip. probability: 13%
- Precipitation: 0"
- Visibility: 7mi
4 am
- 70°F
- Feels like:
72°F
Cloudy
- Wind: 8mph SSW
- Pressure: 29.77"Hg
- Humidity: 93%
- Precip. probability: 24%
- Precipitation: 0"
- Visibility: 6mi
Sunrise: 5:12 am
6 am
- 68°F
- Feels like:
70°F
Cloudy
- Wind: 8mph SW
- Pressure: 29.77"Hg
- Humidity: 96%
- Precip. probability: 10%
- Precipitation: 0"
- Visibility: 6mi
8 am
- 72°F
- Feels like:
73°F
Cloudy
- Wind: 9mph SW
- Pressure: 29.8"Hg
- Humidity: 90%
- Precip. probability: 24%
- Precipitation: 0"
- Visibility: 6mi
10 am
- 75°F
- Feels like:
77°F
Cloudy
- Wind: 7mph WSW
- Pressure: 29.8"Hg
- Humidity: 76%
- Precip. probability: 6%
- Precipitation: 0"
- Visibility: 6mi
12 pm
- 79°F
- Feels like:
82°F
Cloudy
- Wind: 8mph WSW
- Pressure: 29.8"Hg
- Humidity: 64%
- Precip. probability: 6%
- Precipitation: 0"
- Visibility: 10mi
2 pm
- 82°F
- Feels like:
84°F
Mostly Cloudy
- Wind: 9mph W
- Pressure: 29.77"Hg
- Humidity: 55%
- Precip. probability: 15%
- Precipitation: 0"
- Visibility: 10mi
4 pm
- 84°F
- Feels like:
86°F
Partly Cloudy
- Wind: 8mph W
- Pressure: 29.77"Hg
- Humidity: 50%
- Precip. probability: 15%
- Precipitation: 0"
- Visibility: 10mi
6 pm
- 82°F
- Feels like:
86°F
Mostly Cloudy
- Wind: 7mph WNW
- Pressure: 29.74"Hg
- Humidity: 50%
- Precip. probability: 20%
- Precipitation: 0"
- Visibility: 10mi
8 pm
- 79°F
- Feels like:
81°F
Mostly Cloudy
- Wind: 5mph WNW
- Pressure: 29.74"Hg
- Humidity: 59%
- Precip. probability: 23%
- Precipitation: 0"
- Visibility: 10mi
Sunset: 8:55 pm
10 pm
- 75°F
- Feels like:
75°F
Mostly Cloudy
- Wind: 4mph SSE
- Pressure: 29.77"Hg
- Humidity: 71%
- Precip. probability: 21%
- Precipitation: 0"
- Visibility: 10mi
Tomorrow, on Wednesday, cloudy conditions are likely to prevail.
The temperature will vary between a minimum of 20°C and a maximum of 29°C. The hottest part of the day will be at 4 pm and 5 pm.
The maximum is expected to resemble July's average high of 25.3°C rather than June's. The minimum temperature will be also more consistent with July's average low of 14.5°C than June's typical 11.3°C.
The temperature will vary between a minimum of 20°C and a maximum of 29°C. The hottest part of the day will be at 4 pm and 5 pm.
The maximum is expected to resemble July's average high of 25.3°C rather than June's. The minimum temperature will be also more consistent with July's average low of 14.5°C than June's typical 11.3°C.
Updated: Jun 17, 2025 @ 07:16:03 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
