Hilo weather in October: Hilo, Hawaii: normal highs, lows, rain and records for October
Hilo in October has a normal high of 82°F and a normal low of 69°F, a daily mean of 76°F, falling from 83°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 23 days in a normal October, 10.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 21°C, 260 mm of precipitation in October.
- 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 October?
The normal high is 82°F and the normal low 69°F, for a daily mean of 75.7°F. October is 0.8°F cooler than September and 1.7°F warmer than November. October is the 4th warmest month of the year in Hilo and the 5th wettest. Across the month the normal high falls 2°F, from 83°F on October 1 to 81°F on October 31. From one year to the next October's mean temperature typically moves about 1.0°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 75°F and 77°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 78%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 83°F | 69°F | 75% | 52% |
| October 8 | 83°F | 69°F | 75% | 53% |
| October 15 | 83°F | 69°F | 76% | 54% |
| October 22 | 82°F | 69°F | 77% | 55% |
| October 31 | 81°F | 68°F | 78% | 56% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 83°F | 69°F | 75% | 52% | 12 h |
| October 2 | 83°F | 69°F | 75% | 52% | 12 h |
| October 3 | 83°F | 69°F | 75% | 52% | 12 h |
| October 4 | 83°F | 69°F | 75% | 52% | 12 h |
| October 5 | 83°F | 69°F | 75% | 52% | 11 h 50 min |
| October 6 | 83°F | 69°F | 75% | 52% | 11 h 50 min |
| October 7 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 8 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 9 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 10 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 11 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 12 | 83°F | 69°F | 75% | 53% | 11 h 50 min |
| October 13 | 83°F | 69°F | 76% | 53% | 11 h 50 min |
| October 14 | 83°F | 69°F | 76% | 54% | 11 h 40 min |
| October 15 | 83°F | 69°F | 76% | 54% | 11 h 40 min |
| October 16 | 82°F | 69°F | 76% | 54% | 11 h 40 min |
| October 17 | 82°F | 69°F | 76% | 54% | 11 h 40 min |
| October 18 | 82°F | 69°F | 76% | 54% | 11 h 40 min |
| October 19 | 82°F | 69°F | 76% | 54% | 11 h 40 min |
| October 20 | 82°F | 69°F | 76% | 55% | 11 h 40 min |
| October 21 | 82°F | 69°F | 77% | 55% | 11 h 40 min |
| October 22 | 82°F | 69°F | 77% | 55% | 11 h 40 min |
| October 23 | 82°F | 69°F | 77% | 55% | 11 h 30 min |
| October 24 | 82°F | 69°F | 77% | 55% | 11 h 30 min |
| October 25 | 82°F | 69°F | 77% | 56% | 11 h 30 min |
| October 26 | 82°F | 69°F | 77% | 56% | 11 h 30 min |
| October 27 | 82°F | 69°F | 77% | 56% | 11 h 30 min |
| October 28 | 82°F | 69°F | 77% | 56% | 11 h 30 min |
| October 29 | 82°F | 69°F | 77% | 56% | 11 h 30 min |
| October 30 | 82°F | 69°F | 78% | 56% | 11 h 30 min |
| October 31 | 81°F | 68°F | 78% | 56% | 11 h 30 min |
- Normal high
- 82°FOctober average
- Normal low
- 69°FOctober average
- Precipitation
- 10.24 inmonth total
- Days with precipitation
- 230.01 inch or more
- Daylight
- 12 h to 11 h 30 minOctober 1 to October 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 29
- 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 October?
On a given October day the chance of 0.01 inch or more is 76% on average, highest around October 30 (78%). In all, 10.24 in falls on 23 days of a normal October, 3 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 October?
At 3 p.m. the normal temperature is 80°F with 70% relative humidity and a dew point of 69°F; at 6 a.m. it is 70°F with 85% humidity. The wind averages 6.1 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. | 70°F | 65°F | 85% | 5.5 mph | 24% |
| 9 a.m. | 77°F | 69°F | 75% | 5.0 mph | 25% |
| noon | 80°F | 70°F | 70% | 8.7 mph | 23% |
| 3 p.m. | 80°F | 69°F | 70% | 8.8 mph | 20% |
| 6 p.m. | 76°F | 69°F | 81% | 4.8 mph | 21% |
| 9 p.m. | 73°F | 69°F | 86% | 5.0 mph | 21% |
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 October in Hilo?
The warmest October temperature on Hilo's official record (since 1949) is 91°F, on October 19, 1961; the coldest is 62°F, on October 26, 1949. The wettest October brought 26.10 in (1951).
The October mean against the 1991-2020 normal of 75.7°F: 2021 75.8°F (+0.1), 2022 77.5°F (+1.8), 2023 77.1°F (+1.4), 2024 76.4°F (+0.7), 2025 76.6°F (+0.9). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.8°F | +0.1°F | 9.47 in |
| 2022 | 77.5°F | +1.8°F | 6.94 in |
| 2023 | 77.1°F | +1.4°F | 1.36 in |
| 2024 | 76.4°F | +0.7°F | 8.17 in |
| 2025 | 76.6°F | +0.9°F | 8.40 in |
Source: records: ACIS, NWS threaded record ITOthr; recent months: ACIS, station USW00021504. Records and recent months use complete months only.
How does October in Hilo compare across Hawaii?
Across the 18 places PlainClimate covers in Hawaii, October normal highs run from 74°F in Kula to 89°F in Kahului; Hilo's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.