St. Louis, MO 14-Day Forecast
Missouri, United States 🇺🇸
74°
Patchy rain nearby right now
Today: high 83°, low 69°
Updated 11 min ago
St. Louis weather for the next 14 days
Friday, August 7
Sunny High 92° Low 71°Precipitation
61%
· 0.13 in
Max wind
11 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:07 AM / 08:05 PM
Saturday, August 8
Sunny High 91° Low 69°Precipitation
18%
· 0.01 in
Max wind
11 mph
Humidity
76%
UV index
8 - Very High
Sunrise / sunset
06:08 AM / 08:04 PM
Sunday, August 9
Sunny High 99° Low 74°Precipitation
4%
· 0.0 in
Max wind
13 mph
Humidity
62%
UV index
8 - Very High
Sunrise / sunset
06:09 AM / 08:03 PM
Monday, August 10
Sunny High 99° Low 75°Precipitation
3%
· 0.0 in
Max wind
13 mph
Humidity
56%
UV index
9 - Very High
Sunrise / sunset
06:10 AM / 08:01 PM
Tuesday, August 11
Sunny High 102° Low 78°Precipitation
17%
· 0.0 in
Max wind
9 mph
Humidity
52%
UV index
9 - Very High
Sunrise / sunset
06:11 AM / 08:00 PM
Wednesday, August 12
Sunny High 94° Low 72°Precipitation
57%
· 0.06 in
Max wind
17 mph
Humidity
64%
UV index
8 - Very High
Sunrise / sunset
06:12 AM / 07:59 PM
Thursday, August 13
Sunny High 94° Low 75°Precipitation
5%
· 0.0 in
Max wind
9 mph
Humidity
60%
UV index
8 - Very High
Sunrise / sunset
06:13 AM / 07:58 PM
Friday, August 14
Sunny High 89° Low 72°Precipitation
13%
· 0.0 in
Max wind
10 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
06:14 AM / 07:56 PM
Saturday, August 15
Partly Cloudy High 96° Low 74°Precipitation
62%
· 0.21 in
Max wind
12 mph
Humidity
62%
UV index
9 - Very High
Sunrise / sunset
06:15 AM / 07:55 PM
Sunday, August 16
Patchy rain nearby High 86° Low 72°Precipitation
86%
· 1.33 in
Max wind
9 mph
Humidity
87%
UV index
7 - High
Sunrise / sunset
06:15 AM / 07:54 PM
Monday, August 17
Patchy rain nearby High 80° Low 68°Precipitation
73%
· 0.1 in
Max wind
10 mph
Humidity
82%
UV index
7 - High
Sunrise / sunset
06:16 AM / 07:52 PM
Tuesday, August 18
Partly Cloudy High 80° Low 65°Precipitation
21%
· 0.0 in
Max wind
8 mph
Humidity
80%
UV index
7 - High
Sunrise / sunset
06:17 AM / 07:51 PM
Wednesday, August 19
Partly Cloudy High 88° Low 68°Precipitation
11%
· 0.0 in
Max wind
12 mph
Humidity
79%
UV index
8 - Very High
Sunrise / sunset
06:18 AM / 07:50 PM
St. Louis 14-day outlook: the story
The warmest day of St. Louis's 14-day outlook is Tuesday, August 11 with a high near 102°F (39°C); the coolest night comes Tuesday, August 18, dipping to 65°F (18°C). The trend points cooler: week two runs about 7°F below week one. Highs over the next two weeks average 94°F (35°C), about 9°F (5°C) above the typical August high of 85°F (30°C).
Precipitation is most likely on Thursday 6, Friday 7, Wednesday 12, Saturday 15 and beyond; the wettest day looks like Thursday, August 6 with about 2.48 in (63.0 mm) expected. For the weekend, expect Saturday 91°F (33°C) and sunny / Sunday 99°F (37°C) and sunny.
For typical conditions month by month, see the St. Louis climate & average temperatures guide.
St. Louis forecast questions
Will it rain in St. Louis this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Thursday, August 6.
What will be the warmest day in St. Louis over the next 14 days?
Tuesday, August 11, with a forecast high near 102°F (39°C).
How accurate is a 14-day forecast for St. Louis?
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. Louis by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 41° | 25° | 9 | 3.2 in | 5.7 h/day | 69% |
| February | 46° | 27° | 8 | 2.7 in | 7.1 h/day | 66% |
| March | 57° | 38° | 13 | 5.5 in | 7.5 h/day | 67% |
| April | 66° | 46° | 11 | 5.0 in | 9.0 h/day | 65% |
| May | 76° | 58° | 14 | 5.4 in | 10.2 h/day | 71% |
| June | 86° | 67° | 11 | 4.5 in | 11.6 h/day | 68% |
| July | 88° | 71° | 13 | 6.9 in | 11.8 h/day | 73% |
| August | 85° | 69° | 13 | 5.4 in | 11.0 h/day | 74% |
| September | 82° | 63° | 8 | 4.7 in | 10.2 h/day | 69% |
| October | 69° | 51° | 9 | 3.6 in | 8.1 h/day | 67% |
| November | 55° | 38° | 9 | 3.3 in | 7.0 h/day | 69% |
| December | 47° | 31° | 8 | 3.2 in | 6.0 h/day | 71% |
14-day forecasts nearby