Hilo weather in July: Hilo, Hawaii: normal highs, lows, rain and records for July
Hilo in July has a normal high of 83°F and a normal low of 70°F, a daily mean of 76°F, holding near 83°F all month. Measurable precipitation falls on 27 days in a normal July, 9.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 21°C, 235 mm of precipitation in July.
- NOAA stationHilo International Airport 87
- Station IDUSW00021504
- Location19.72°N 155.05°W
- Elevation38 ft (12 m)
- Population (census place)48,223
- Jan 79° 64°
- Feb 78° 64°
- Mar 79° 65°
- Apr 79° 66°
- May 81° 67°
- Jun 82° 69°
- Jul 83° 70°
- Aug 83° 70°
- Sep 83° 70°
- Oct 82° 69°
- Nov 80° 68°
- Dec 79° 66°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Hilo in July?
The normal high is 83°F and the normal low 70°F, for a daily mean of 76.3°F. July is 1.1°F warmer than June and 0.3°F cooler than August. July is the 3rd warmest month of the year in Hilo and the 8th wettest. Across the month the normal high rises 1°F, from 82°F on July 1 to 83°F on July 31. From one year to the next July's mean temperature typically moves about 1.2°F either way (NOAA's standard deviation), so roughly two Julys in three average between 75°F and 78°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 88%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 82°F | 69°F | 85% | 59% |
| July 8 | 83°F | 70°F | 85% | 60% |
| July 15 | 83°F | 70°F | 86% | 61% |
| July 22 | 83°F | 70°F | 86% | 60% |
| July 31 | 83°F | 70°F | 88% | 60% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 20, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 82°F | 69°F | 85% | 59% | 13 h 20 min |
| July 2 | 82°F | 69°F | 85% | 60% | 13 h 20 min |
| July 3 | 82°F | 69°F | 85% | 60% | 13 h 20 min |
| July 4 | 83°F | 69°F | 85% | 60% | 13 h 20 min |
| July 5 | 83°F | 70°F | 85% | 60% | 13 h 20 min |
| July 6 | 83°F | 70°F | 85% | 60% | 13 h 20 min |
| July 7 | 83°F | 70°F | 85% | 60% | 13 h 20 min |
| July 8 | 83°F | 70°F | 85% | 60% | 13 h 20 min |
| July 9 | 83°F | 70°F | 85% | 60% | 13 h 20 min |
| July 10 | 83°F | 70°F | 85% | 61% | 13 h 20 min |
| July 11 | 83°F | 70°F | 85% | 61% | 13 h 20 min |
| July 12 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 13 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 14 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 15 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 16 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 17 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 18 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 19 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 20 | 83°F | 70°F | 86% | 61% | 13 h 10 min |
| July 21 | 83°F | 70°F | 86% | 60% | 13 h 10 min |
| July 22 | 83°F | 70°F | 86% | 60% | 13 h 10 min |
| July 23 | 83°F | 70°F | 87% | 60% | 13 h 10 min |
| July 24 | 83°F | 70°F | 87% | 60% | 13 h 10 min |
| July 25 | 83°F | 70°F | 87% | 60% | 13 h 10 min |
| July 26 | 83°F | 70°F | 87% | 60% | 13 h 10 min |
| July 27 | 83°F | 70°F | 87% | 60% | 13 h 10 min |
| July 28 | 83°F | 70°F | 87% | 60% | 13 h |
| July 29 | 83°F | 70°F | 87% | 60% | 13 h |
| July 30 | 83°F | 70°F | 87% | 60% | 13 h |
| July 31 | 83°F | 70°F | 88% | 60% | 13 h |
- Normal high
- 83°FJuly average
- Normal low
- 70°FJuly average
- Precipitation
- 9.24 inmonth total
- Days with precipitation
- 270.01 inch or more
- Daylight
- 13 h 20 min to 13 hJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00021504; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Hilo in July?
On a given July day the chance of 0.01 inch or more is 86% on average, highest around July 31 (88%). In all, 9.24 in falls on 27 days of a normal July, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00021504.
How humid and windy is Hilo in July?
At 3 p.m. the normal temperature is 82°F with 68% relative humidity and a dew point of 70°F; at 6 a.m. it is 71°F with 87% humidity. The wind averages 6.3 mph, most often from the east-northeast in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 71°F | 67°F | 87% | 5.0 mph | – |
| 9 a.m. | 78°F | 70°F | 75% | 5.5 mph | – |
| noon | 82°F | 70°F | 68% | 9.2 mph | – |
| 3 p.m. | 82°F | 70°F | 68% | 9.4 mph | 20% |
| 6 p.m. | 79°F | 69°F | 73% | 6.9 mph | – |
| 9 p.m. | 75°F | 70°F | 84% | 4.6 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00021504. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for July in Hilo?
The warmest July temperature on Hilo's official record (since 1949) is 93°F, on July 26, 2020; the coldest is 62°F, on July 11, 1970. The wettest July brought 28.59 in (1982).
The July mean against the 1991-2020 normal of 76.3°F: 2021 76.6°F (+0.3), 2022 76.3°F (at normal), 2023 77.4°F (+1.1), 2024 77.6°F (+1.3), 2025 76.9°F (+0.6), 2026 77.2°F (+0.9). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.6°F | +0.3°F | 9.52 in |
| 2022 | 76.3°F | at normal | 5.39 in |
| 2023 | 77.4°F | +1.1°F | 4.97 in |
| 2024 | 77.6°F | +1.3°F | 4.84 in |
| 2025 | 76.9°F | +0.6°F | 3.75 in |
| 2026 | 77.2°F | +0.9°F | 11.28 in |
Source: records: ACIS, NWS threaded record ITOthr; recent months: ACIS, station USW00021504. Records and recent months use complete months only.
How does July in Hilo compare across Hawaii?
Across the 18 places PlainClimate covers in Hawaii, July normal highs run from 75°F in Kula to 89°F in Kahului; Hilo's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.