Hilo, HI 14-Day Forecast
Hawaii, United States 🇺🇸
78°
Patchy rain nearby right now
Today: high 80°, low 76°
Updated just now
Hilo weather for the next 14 days
Wednesday, September 16
Patchy rain nearby High 79° Low 78°Precipitation
36%
· 0.01 in
Max wind
15 mph
Humidity
82%
UV index
12 - Extreme
Sunrise / sunset
06:08 AM / 06:22 PM
Thursday, September 17
Patchy rain nearby High 79° Low 77°Precipitation
84%
· 0.51 in
Max wind
11 mph
Humidity
82%
UV index
11 - Extreme
Sunrise / sunset
06:08 AM / 06:21 PM
Friday, September 18
Patchy rain nearby High 79° Low 78°Precipitation
74%
· 0.17 in
Max wind
11 mph
Humidity
72%
UV index
10 - Very High
Sunrise / sunset
06:08 AM / 06:20 PM
Saturday, September 19
Light rain shower High 78° Low 77°Precipitation
81%
· 0.29 in
Max wind
12 mph
Humidity
74%
UV index
11 - Extreme
Sunrise / sunset
06:08 AM / 06:19 PM
Sunday, September 20
Light rain shower High 78° Low 76°Precipitation
82%
· 0.36 in
Max wind
8 mph
Humidity
77%
UV index
6 - High
Sunrise / sunset
06:08 AM / 06:18 PM
Monday, September 21
Light rain shower High 78° Low 77°Precipitation
88%
· 1.74 in
Max wind
8 mph
Humidity
84%
UV index
6 - High
Sunrise / sunset
06:09 AM / 06:17 PM
Tuesday, September 22
Light rain shower High 77° Low 76°Precipitation
92%
· 1.85 in
Max wind
13 mph
Humidity
91%
UV index
6 - High
Sunrise / sunset
06:09 AM / 06:16 PM
Wednesday, September 23
Light rain shower High 79° Low 77°Precipitation
90%
· 0.4 in
Max wind
12 mph
Humidity
87%
UV index
6 - High
Sunrise / sunset
06:09 AM / 06:16 PM
Thursday, September 24
Patchy rain nearby High 80° Low 77°Precipitation
75%
· 0.12 in
Max wind
6 mph
Humidity
82%
UV index
7 - High
Sunrise / sunset
06:09 AM / 06:15 PM
Friday, September 25
Patchy rain nearby High 80° Low 78°Precipitation
67%
· 0.08 in
Max wind
6 mph
Humidity
83%
UV index
7 - High
Sunrise / sunset
06:09 AM / 06:14 PM
Saturday, September 26
Sunny High 79° Low 78°Precipitation
14%
· 0.0 in
Max wind
6 mph
Humidity
83%
UV index
7 - High
Sunrise / sunset
06:10 AM / 06:13 PM
Sunday, September 27
Patchy rain nearby High 79° Low 77°Precipitation
79%
· 0.21 in
Max wind
7 mph
Humidity
83%
UV index
6 - High
Sunrise / sunset
06:10 AM / 06:12 PM
Monday, September 28
Sunny High 80° Low 77°Precipitation
68%
· 0.17 in
Max wind
6 mph
Humidity
79%
UV index
7 - High
Sunrise / sunset
06:10 AM / 06:11 PM
Hilo 14-day outlook: the story
The warmest day of Hilo's 14-day outlook is Friday, September 25 with a high near 80°F (27°C); the coolest night comes Tuesday, September 15, dipping to 76°F (24°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 79°F (26°C), right in line with the typical September high of 80°F (27°C).
Precipitation is most likely on Thursday 17, Friday 18, Saturday 19, Sunday 20 and beyond; the wettest day looks like Tuesday, September 22 with about 1.85 in (47.0 mm) expected. For the weekend, expect Saturday 78°F (26°C) and light rain shower / Sunday 78°F (25°C) and light rain shower.
For typical conditions month by month, see the Hilo climate & average temperatures guide.
Hilo forecast questions
Will it rain in Hilo this week?
The forecast currently shows meaningful precipitation chances on 11 of the next 14 days, peaking around Tuesday, September 22.
What will be the warmest day in Hilo over the next 14 days?
Friday, September 25, with a forecast high near 80°F (27°C).
How accurate is a 14-day forecast for Hilo?
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 Hilo by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 76° | 65° | 15 | 5.7 in | 9.7 h/day | 79% |
| February | 75° | 65° | 20 | 8.5 in | 9.3 h/day | 80% |
| March | 75° | 66° | 23 | 9.9 in | 8.6 h/day | 82% |
| April | 76° | 67° | 24 | 9.3 in | 9.8 h/day | 82% |
| May | 77° | 68° | 26 | 8.0 in | 10.4 h/day | 82% |
| June | 78° | 69° | 23 | 5.1 in | 11.7 h/day | 82% |
| July | 80° | 70° | 27 | 6.6 in | 11.7 h/day | 82% |
| August | 80° | 71° | 26 | 9.1 in | 11.0 h/day | 83% |
| September | 80° | 71° | 24 | 5.5 in | 10.9 h/day | 81% |
| October | 80° | 70° | 22 | 8.5 in | 10.0 h/day | 81% |
| November | 78° | 68° | 22 | 9.4 in | 9.1 h/day | 82% |
| December | 76° | 66° | 22 | 8.0 in | 8.8 h/day | 82% |
14-day forecasts nearby