Ottawa, Canada 14-Day Forecast
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83°
Sunny right now
Today: high 83°, low 60°
Updated 3 hours ago
Ottawa weather for the next 14 days
Thursday, August 13
Sunny High 74° Low 56°Precipitation
27%
· 0.01 in
Max wind
12 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
06:01 AM / 08:13 PM
Friday, August 14
Sunny High 71° Low 52°Precipitation
10%
· 0.0 in
Max wind
8 mph
Humidity
72%
UV index
6 - Moderate
Sunrise / sunset
06:02 AM / 08:12 PM
Saturday, August 15
Sunny High 71° Low 50°Precipitation
8%
· 0.0 in
Max wind
5 mph
Humidity
72%
UV index
6 - Moderate
Sunrise / sunset
06:03 AM / 08:10 PM
Sunday, August 16
Partly Cloudy High 64° Low 58°Precipitation
77%
· 0.1 in
Max wind
7 mph
Humidity
86%
UV index
4 - Moderate
Sunrise / sunset
06:05 AM / 08:09 PM
Monday, August 17
Sunny High 73° Low 57°Precipitation
17%
· 0.0 in
Max wind
9 mph
Humidity
77%
UV index
6 - High
Sunrise / sunset
06:06 AM / 08:07 PM
Tuesday, August 18
Sunny High 74° Low 56°Precipitation
57%
· 0.06 in
Max wind
7 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
06:07 AM / 08:05 PM
Wednesday, August 19
Sunny High 75° Low 57°Precipitation
57%
· 0.05 in
Max wind
7 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
06:08 AM / 08:04 PM
Thursday, August 20
Patchy rain nearby High 71° Low 59°Precipitation
85%
· 1.13 in
Max wind
18 mph
Humidity
88%
UV index
6 - High
Sunrise / sunset
06:09 AM / 08:02 PM
Friday, August 21
Sunny High 64° Low 47°Precipitation
8%
· 0.0 in
Max wind
15 mph
Humidity
70%
UV index
5 - Moderate
Sunrise / sunset
06:11 AM / 08:00 PM
Saturday, August 22
Sunny High 67° Low 44°Precipitation
6%
· 0.0 in
Max wind
6 mph
Humidity
68%
UV index
5 - Moderate
Sunrise / sunset
06:12 AM / 07:59 PM
Sunday, August 23
Sunny High 70° Low 49°Precipitation
8%
· 0.0 in
Max wind
9 mph
Humidity
72%
UV index
6 - High
Sunrise / sunset
06:13 AM / 07:57 PM
Monday, August 24
Sunny High 70° Low 48°Precipitation
5%
· 0.0 in
Max wind
10 mph
Humidity
64%
UV index
6 - High
Sunrise / sunset
06:14 AM / 07:55 PM
Tuesday, August 25
Sunny High 71° Low 51°Precipitation
36%
· 0.01 in
Max wind
9 mph
Humidity
73%
UV index
6 - High
Sunrise / sunset
06:15 AM / 07:53 PM
Ottawa 14-day outlook: the story
The warmest day of Ottawa's 14-day outlook is Wednesday, August 12 with a high near 83°F (28°C); the coolest night comes Saturday, August 22, dipping to 44°F (7°C). The trend points cooler: week two runs about 3°F below week one. Highs over the next two weeks average 73°F (23°C), about 4°F (2°C) below the typical August high of 77°F (25°C).
Precipitation is most likely on Wednesday 12, Sunday 16, Tuesday 18, Wednesday 19 and beyond; the wettest day looks like Thursday, August 20 with about 1.13 in (28.8 mm) expected. For the weekend, expect Saturday 71°F (22°C) and sunny / Sunday 64°F (18°C) and partly cloudy.
For typical conditions month by month, see the Ottawa climate & average temperatures guide.
Ottawa forecast questions
Will it rain in Ottawa this week?
The forecast currently shows meaningful precipitation chances on 5 of the next 14 days, peaking around Thursday, August 20.
What will be the warmest day in Ottawa over the next 14 days?
Wednesday, August 12, with a forecast high near 83°F (28°C).
How accurate is a 14-day forecast for Ottawa?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Ottawa by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 25° | 8° | 11 | 3.0 in | 4.9 h/day | 76% |
| February | 28° | 9° | 12 | 2.9 in | 6.1 h/day | 73% |
| March | 37° | 20° | 11 | 3.0 in | 7.5 h/day | 70% |
| April | 51° | 32° | 13 | 4.2 in | 8.2 h/day | 66% |
| May | 67° | 46° | 11 | 3.4 in | 10.4 h/day | 66% |
| June | 74° | 56° | 13 | 4.5 in | 10.8 h/day | 71% |
| July | 80° | 63° | 13 | 4.2 in | 12.0 h/day | 72% |
| August | 77° | 62° | 13 | 4.8 in | 10.8 h/day | 76% |
| September | 71° | 55° | 9 | 3.0 in | 9.5 h/day | 76% |
| October | 57° | 44° | 12 | 4.1 in | 6.4 h/day | 77% |
| November | 43° | 31° | 12 | 3.0 in | 5.0 h/day | 76% |
| December | 32° | 20° | 12 | 3.5 in | 3.8 h/day | 78% |
14-day forecasts nearby