St. John's, Canada 14-Day Forecast
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52°
Overcast right now
Today: high 65°, low 52°
Updated just now
St. John's weather for the next 14 days
Wednesday, September 16
Fog High 63° Low 51°Precipitation
96%
· 0.59 in
Max wind
7 mph
Humidity
98%
UV index
1 - Low
Sunrise / sunset
06:39 AM / 07:11 PM
Thursday, September 17
Overcast High 68° Low 50°Precipitation
18%
· 0.0 in
Max wind
13 mph
Humidity
76%
UV index
5 - Moderate
Sunrise / sunset
06:40 AM / 07:09 PM
Friday, September 18
Overcast High 59° Low 48°Precipitation
79%
· 0.12 in
Max wind
19 mph
Humidity
84%
UV index
3 - Moderate
Sunrise / sunset
06:42 AM / 07:07 PM
Saturday, September 19
Patchy rain nearby High 52° Low 43°Precipitation
38%
· 0.02 in
Max wind
33 mph
Humidity
69%
UV index
3 - Moderate
Sunrise / sunset
06:43 AM / 07:05 PM
Sunday, September 20
Overcast High 50° Low 41°Precipitation
17%
· 0.0 in
Max wind
21 mph
Humidity
62%
UV index
4 - Moderate
Sunrise / sunset
06:44 AM / 07:03 PM
Monday, September 21
Overcast High 54° Low 43°Precipitation
83%
· 0.27 in
Max wind
10 mph
Humidity
79%
UV index
3 - Moderate
Sunrise / sunset
06:46 AM / 07:01 PM
Tuesday, September 22
Overcast High 56° Low 47°Precipitation
36%
· 0.0 in
Max wind
14 mph
Humidity
86%
UV index
3 - Moderate
Sunrise / sunset
06:47 AM / 06:59 PM
Wednesday, September 23
Light rain shower High 47° Low 44°Precipitation
92%
· 0.42 in
Max wind
28 mph
Humidity
91%
UV index
2 - Low
Sunrise / sunset
06:48 AM / 06:57 PM
Thursday, September 24
Sunny High 52° Low 42°Precipitation
38%
· 0.02 in
Max wind
22 mph
Humidity
71%
UV index
4 - Moderate
Sunrise / sunset
06:50 AM / 06:55 PM
Friday, September 25
Sunny High 61° Low 44°Precipitation
9%
· 0.0 in
Max wind
13 mph
Humidity
76%
UV index
5 - Moderate
Sunrise / sunset
06:51 AM / 06:53 PM
Saturday, September 26
Overcast High 60° Low 51°Precipitation
25%
· 0.0 in
Max wind
14 mph
Humidity
83%
UV index
4 - Moderate
Sunrise / sunset
06:53 AM / 06:51 PM
Sunday, September 27
Overcast High 67° Low 53°Precipitation
20%
· 0.0 in
Max wind
16 mph
Humidity
83%
UV index
5 - Moderate
Sunrise / sunset
06:54 AM / 06:48 PM
Monday, September 28
Fog High 61° Low 52°Precipitation
80%
· 0.05 in
Max wind
10 mph
Humidity
97%
UV index
4 - Moderate
Sunrise / sunset
06:55 AM / 06:46 PM
St. John's 14-day outlook: the story
The warmest day of St. John's's 14-day outlook is Thursday, September 17 with a high near 68°F (20°C); the coolest night comes Sunday, September 20, dipping to 41°F (5°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 59°F (15°C), about 3°F (2°C) below the typical September high of 62°F (17°C).
Precipitation is most likely on Tuesday 15, Wednesday 16, Friday 18, Monday 21 and beyond; the wettest day looks like Wednesday, September 16 with about 0.59 in (15.0 mm) expected. For the weekend, expect Saturday 52°F (11°C) and patchy rain nearby / Sunday 50°F (10°C) and overcast.
For typical conditions month by month, see the St. John's climate & average temperatures guide.
St. John's forecast questions
Will it rain in St. John's this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Wednesday, September 16.
What will be the warmest day in St. John's over the next 14 days?
Thursday, September 17, with a forecast high near 68°F (20°C).
How accurate is a 14-day forecast for St. John's?
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 St. John's by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 33° | 23° | 16 | 6.1 in | 3.9 h/day | 81% |
| February | 33° | 21° | 14 | 5.0 in | 4.8 h/day | 77% |
| March | 35° | 24° | 14 | 5.0 in | 6.5 h/day | 79% |
| April | 41° | 31° | 14 | 4.8 in | 6.6 h/day | 82% |
| May | 49° | 36° | 12 | 3.6 in | 8.6 h/day | 82% |
| June | 58° | 46° | 13 | 4.2 in | 7.8 h/day | 85% |
| July | 66° | 54° | 12 | 3.6 in | 9.0 h/day | 86% |
| August | 68° | 58° | 11 | 3.7 in | 8.9 h/day | 83% |
| September | 62° | 52° | 12 | 4.7 in | 7.2 h/day | 82% |
| October | 53° | 44° | 12 | 3.9 in | 5.6 h/day | 81% |
| November | 45° | 36° | 14 | 6.1 in | 3.9 h/day | 81% |
| December | 37° | 28° | 14 | 5.0 in | 3.2 h/day | 80% |
14-day forecasts nearby