Ottawa, Canada Hourly Forecast
Ottawa temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 4 PM - around 88°
- Coolest hour: 6 AM - around 64°
- Highest rain chance: 1 AM (23%) - pack accordingly
- UV peak: 1 PM at index 7 - sun protection recommended
- Windiest: 1 PM at 7 mph
Ottawa hourly weather - Thursday, August 6
In Ottawa, expect a high near 88°F (31°C) around 4 PM and a low of 73°F (23°C) near 11 PM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 3 PM | Sunny | 86° | 89° | 3% | 3 mph WSW | 53% | 6 | |
| 4 PM | Sunny | 88° | 92° | 2% | 2 mph SSW | 53% | 4 | |
| 5 PM | Sunny | 87° | 91° | 2% | 3 mph S | 56% | 2 | |
| 6 PM | Sunny | 84° | 88° | 3% | 4 mph SSE | 60% | 1 | |
| 7 PM | Sunny | 81° | 85° | 5% | 5 mph SSE | 67% | 0 | |
| 8 PM | Sunny | 78° | 81° | 6% | 6 mph SSE | 72% | 0 | |
| 9 PM | Clear | 76° | 79° | 7% | 5 mph S | 73% | 0 | |
| 10 PM | Clear | 74° | 79° | 8% | 4 mph S | 78% | 0 | |
| 11 PM | Clear | 73° | 78° | 10% | 3 mph SSW | 83% | 0 |
Ottawa hourly weather - Friday, August 7
In Ottawa, expect a high near 83°F (28°C) around 3 PM and a low of 64°F (18°C) near 6 AM; precipitation risk peaks at 23% around 1 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 71° | 76° | 16% | 3 mph W | 87% | 0 | |
| 1 AM | Mist | 67° | 70° | 23% | 4 mph NW | 95% | 0 | |
| 2 AM | Mist | 66° | 69° | 22% | 4 mph NW | 96% | 0 | |
| 3 AM | Mist | 66° | 69° | 23% | 3 mph NW | 95% | 0 | |
| 4 AM | Mist | 65° | 68° | 23% | 2 mph WNW | 95% | 0 | |
| 5 AM | Mist | 65° | 68° | 22% | 2 mph WNW | 94% | 0 | |
| 6 AM | Mist | 64° | 67° | 20% | 3 mph W | 95% | 0 | |
| 7 AM | Mist | 67° | 70° | 20% | 3 mph W | 94% | 0 | |
| 8 AM | Partly Cloudy | 70° | 74° | 16% | 3 mph WSW | 91% | 1 | |
| 9 AM | Partly Cloudy | 72° | 76° | 16% | 4 mph SW | 87% | 2 | |
| 10 AM | Partly Cloudy | 74° | 78° | 13% | 5 mph WSW | 82% | 4 | |
| 11 AM | Partly Cloudy | 77° | 80° | 10% | 5 mph WSW | 74% | 5 | |
| 12 PM | Partly Cloudy | 79° | 81° | 6% | 6 mph WSW | 67% | 6 | |
| 1 PM | Sunny | 81° | 83° | 4% | 7 mph WSW | 61% | 7 | |
| 2 PM | Partly Cloudy | 82° | 84° | 4% | 7 mph WSW | 55% | 7 | |
| 3 PM | Sunny | 83° | 84° | 3% | 6 mph SW | 52% | 5 | |
| 4 PM | Sunny | 82° | 84° | 4% | 4 mph SW | 62% | 3 | |
| 5 PM | Sunny | 82° | 84° | 4% | 5 mph SSW | 60% | 1 | |
| 6 PM | Sunny | 81° | 84° | 4% | 6 mph SSW | 61% | 0 | |
| 7 PM | Sunny | 77° | 80° | 6% | 6 mph S | 71% | 0 | |
| 8 PM | Sunny | 72° | 74° | 9% | 5 mph S | 77% | 0 | |
| 9 PM | Clear | 69° | 71° | 11% | 4 mph SSW | 82% | 0 | |
| 10 PM | Clear | 68° | 70° | 13% | 4 mph SW | 87% | 0 | |
| 11 PM | Clear | 67° | 69° | 15% | 4 mph SSW | 90% | 0 |
Ottawa hourly weather - Saturday, August 8
In Ottawa, expect a high near 81°F (27°C) around 12 PM and a low of 63°F (17°C) near 6 AM; precipitation risk peaks at 70% around 9 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 66° | 69° | 16% | 3 mph SW | 93% | 0 | |
| 1 AM | Clear | 66° | 69° | 17% | 4 mph SSW | 94% | 0 | |
| 2 AM | Mist | 65° | 68° | 22% | 3 mph SW | 95% | 0 | |
| 3 AM | Mist | 65° | 68° | 21% | 2 mph SW | 95% | 0 | |
| 4 AM | Mist | 64° | 67° | 21% | 3 mph SSW | 95% | 0 | |
| 5 AM | Mist | 64° | 66° | 20% | 3 mph SSW | 95% | 0 | |
| 6 AM | Mist | 63° | 66° | 23% | 3 mph S | 95% | 0 | |
| 7 AM | Sunny | 66° | 69° | 16% | 3 mph S | 93% | 0 | |
| 8 AM | Sunny | 69° | 72° | 14% | 5 mph SSE | 88% | 1 | |
| 9 AM | Sunny | 73° | 76° | 10% | 5 mph S | 80% | 2 | |
| 10 AM | Partly Cloudy | 76° | 79° | 9% | 6 mph SSW | 73% | 3 | |
| 11 AM | Cloudy | 79° | 81° | 11% | 7 mph SSW | 69% | 4 | |
| 12 PM | Patchy rain nearby | 81° | 84° | 12% | 8 mph SSW | 65% | 5 | |
| 1 PM | Light rain shower | 81° | 84° | 24% | 8 mph SSW | 67% | 5 | |
| 2 PM | Patchy light drizzle | 80° | 84° | 36% | 8 mph SSW | 73% | 4 | |
| 3 PM | Light rain shower | 79° | 83° | 57% | 8 mph SW | 76% | 4 | |
| 4 PM | Thundery outbreaks in nearby | 80° | 83° | 25% | 8 mph SSW | 76% | 3 | |
| 5 PM | Patchy light rain in area with thunder | 80° | 84° | 53% | 9 mph SSW | 75% | 2 | |
| 6 PM | Patchy light rain in area with thunder | 76° | 79° | 61% | 8 mph SW | 84% | 1 | |
| 7 PM | Patchy light rain in area with thunder | 75° | 80° | 67% | 6 mph WSW | 85% | 0 | |
| 8 PM | Sunny | 72° | 77° | 13% | 5 mph WSW | 89% | 0 | |
| 9 PM | Patchy rain nearby | 70° | 74° | 70% | 5 mph WSW | 92% | 0 | |
| 10 PM | Clear | 69° | 72° | 16% | 5 mph SW | 93% | 0 | |
| 11 PM | Mist | 68° | 70° | 20% | 6 mph WSW | 95% | 0 |
Quick answers for the hours ahead
What is the warmest hour in Ottawa today?
Will it rain in Ottawa tonight?
When is the UV index highest in Ottawa today?
Ottawa hour-by-hour: what to expect
Over the next 24 hours in Ottawa, temperatures range from 64°F (18°C) around 6 AM up to 88°F (31°C) near 4 PM - about 11°F (6°C) above the typical August high of 77°F (25°C).
A stray shower can't be ruled out - Rain chances top out at 23% around 1 AM. UV reaches 7 (1 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the Ottawa 14-day forecast or the monthly climate averages.