Grand Rapids, MI 14-Day Forecast
Michigan, United States 🇺🇸
70°
Mist right now
Today: high 70°, low 60°
Updated 1 min ago
Grand Rapids weather for the next 14 days
Wednesday, September 16
Overcast High 76° Low 61°Precipitation
17%
· 0.0 in
Max wind
10 mph
Humidity
69%
UV index
6 - High
Sunrise / sunset
07:23 AM / 07:51 PM
Thursday, September 17
Patchy rain nearby High 78° Low 63°Precipitation
36%
· 0.01 in
Max wind
9 mph
Humidity
78%
UV index
4 - Moderate
Sunrise / sunset
07:24 AM / 07:49 PM
Friday, September 18
Overcast High 70° Low 55°Precipitation
12%
· 0.0 in
Max wind
16 mph
Humidity
66%
UV index
6 - Moderate
Sunrise / sunset
07:25 AM / 07:47 PM
Saturday, September 19
Patchy rain nearby High 56° Low 50°Precipitation
91%
· 2.77 in
Max wind
17 mph
Humidity
87%
UV index
1 - Low
Sunrise / sunset
07:26 AM / 07:46 PM
Sunday, September 20
Light rain shower High 55° Low 53°Precipitation
93%
· 0.42 in
Max wind
14 mph
Humidity
95%
UV index
3 - Moderate
Sunrise / sunset
07:27 AM / 07:44 PM
Monday, September 21
Patchy rain nearby High 64° Low 53°Precipitation
85%
· 0.12 in
Max wind
14 mph
Humidity
94%
UV index
4 - Moderate
Sunrise / sunset
07:29 AM / 07:42 PM
Tuesday, September 22
Patchy rain nearby High 72° Low 60°Precipitation
64%
· 0.04 in
Max wind
12 mph
Humidity
87%
UV index
6 - High
Sunrise / sunset
07:30 AM / 07:40 PM
Wednesday, September 23
Overcast High 78° Low 61°Precipitation
15%
· 0.0 in
Max wind
10 mph
Humidity
78%
UV index
6 - High
Sunrise / sunset
07:31 AM / 07:38 PM
Thursday, September 24
Light rain shower High 71° Low 64°Precipitation
88%
· 0.24 in
Max wind
12 mph
Humidity
89%
UV index
5 - Moderate
Sunrise / sunset
07:32 AM / 07:37 PM
Friday, September 25
Light rain shower High 67° Low 63°Precipitation
94%
· 0.59 in
Max wind
9 mph
Humidity
98%
UV index
4 - Moderate
Sunrise / sunset
07:33 AM / 07:35 PM
Saturday, September 26
Sunny High 69° Low 55°Precipitation
36%
· 0.01 in
Max wind
13 mph
Humidity
79%
UV index
5 - Moderate
Sunrise / sunset
07:34 AM / 07:33 PM
Sunday, September 27
Sunny High 62° Low 49°Precipitation
6%
· 0.0 in
Max wind
9 mph
Humidity
59%
UV index
5 - Moderate
Sunrise / sunset
07:35 AM / 07:31 PM
Monday, September 28
Sunny High 62° Low 47°Precipitation
8%
· 0.0 in
Max wind
8 mph
Humidity
62%
UV index
5 - Moderate
Sunrise / sunset
07:36 AM / 07:29 PM
Grand Rapids 14-day outlook: the story
The warmest day of Grand Rapids's 14-day outlook is Wednesday, September 23 with a high near 78°F (26°C); the coolest night comes Monday, September 28, dipping to 47°F (9°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 67°F (19°C), about 8°F (4°C) below the typical September high of 75°F (24°C).
Precipitation is most likely on Tuesday 15, Saturday 19, Sunday 20, Monday 21 and beyond; the wettest day looks like Saturday, September 19 with about 2.77 in (70.2 mm) expected. For the weekend, expect Saturday 56°F (13°C) and patchy rain nearby / Sunday 55°F (13°C) and light rain shower.
For typical conditions month by month, see the Grand Rapids climate & average temperatures guide.
Grand Rapids forecast questions
Will it rain in Grand Rapids this week?
The forecast currently shows meaningful precipitation chances on 7 of the next 14 days, peaking around Saturday, September 19.
What will be the warmest day in Grand Rapids over the next 14 days?
Wednesday, September 23, with a forecast high near 78°F (26°C).
How accurate is a 14-day forecast for Grand Rapids?
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 Grand Rapids by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 32° | 20° | 12 | 2.6 in | 3.7 h/day | 77% |
| February | 34° | 18° | 10 | 2.6 in | 6.1 h/day | 73% |
| March | 45° | 28° | 10 | 3.3 in | 7.7 h/day | 67% |
| April | 56° | 37° | 13 | 3.7 in | 8.7 h/day | 66% |
| May | 69° | 49° | 12 | 4.0 in | 10.2 h/day | 66% |
| June | 78° | 59° | 12 | 4.3 in | 12.0 h/day | 66% |
| July | 82° | 64° | 11 | 3.3 in | 12.3 h/day | 69% |
| August | 80° | 63° | 10 | 3.9 in | 11.4 h/day | 71% |
| September | 75° | 58° | 9 | 2.8 in | 9.5 h/day | 72% |
| October | 61° | 46° | 14 | 4.3 in | 6.8 h/day | 73% |
| November | 47° | 35° | 10 | 2.6 in | 5.1 h/day | 74% |
| December | 38° | 27° | 12 | 2.9 in | 3.4 h/day | 78% |