GreenlyLast and first frost dates in Hilo
United States
Hilo had no frost in 2016–2025, so crops are planted by warmth and rain rather than by frost dates.
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| Last spring frost | none in ten years |
|---|---|
| First autumn frost | none in ten years |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.
There is no frost season here: crops are planted by warmth and rain rather than by frost dates.
When the soil warms up in Hilo
The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).
| Soil | Date |
|---|---|
| 5 °C | already in the first week of January |
| 10 °C | already in the first week of January |
| 15 °C | already in the first week of January |
| 18 °C | already in the first week of January |
Frost dates near Hilo
Of the nearest cities on our list, the last spring frost ends earliest in Stockton (4 February) and latest in Santa Barbara (15 March).
| City | Distance | Last spring frost | First autumn frost |
|---|---|---|---|
| Honolulu | 339 km | — | — |
| San Francisco | 3,735 km | — | — |
| San Jose | 3,760 km | 24 February | — |
| Stockton | 3,835 km | 4 February | 3 December |
| Santa Barbara | 3,841 km | 15 March | 15 December |
Seeds, seedlings and markets in Hilo
Within 15 km of Hilo OpenStreetMap lists 4 garden centres, 1 farm-supply shop and 5 markets (collected 28 October 2026). The nearest garden centre to the city centre is Garden Exchange, 2 km away.
- Garden Exchange — garden centre
Keawe Street 300, 96720 Hilo · Mon–Sat 08:00–16:30; Sun closed · 2 km · gardenexchangehilo.com - Hilo Farmer's Market - Food — market
Mamo Street 20, 96720 Hilo · 07:00–15:00 · 2 km · hilofarmersmarket.com - Hilo Town Market — market
Waianuenue Avenue 69, 96720 Hilo · Fri 17:00–21:00 · 2 km · hilotownmarket.co - Kinoole Farmers Market — market
Kinoole Street 1900, 96720 Hilo · Sat 06:30–12:00 · 3 km · kinoolefarmersmarket.wordpress.com - Panaʻewa Farmers Market — market
Fri 11:00–14:00; Sat 06:00–10:00 · 4 km
Places: © OpenStreetMap contributors, ODbL.
Hilo: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Hilo by month
Average weather in Hilo over 2016–2025: the warmest month is September. Months that average 20 °C or more by day: January–December (24.9–27.8 °C). No month averages below 0 °C at night; the coldest nights, in February, average 19 °C. About 2106 mm of rain falls in a year, on 278 days; March is the wettest month (231 mm) and June the driest (110 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 25.4 | 19.4 | 133 | 17 |
| February | 24.9 | 19 | 195 | 19 |
| March | 25.1 | 19.6 | 231 | 23 |
| April | 25.7 | 20.1 | 197 | 24 |
| May | 26 | 20.7 | 175 | 27 |
| June | 26.6 | 21.3 | 110 | 25 |
| July | 27.3 | 21.9 | 135 | 26 |
| August | 27.6 | 22.2 | 187 | 26 |
| September | 27.8 | 22.1 | 131 | 25 |
| October | 27.4 | 21.8 | 211 | 22 |
| November | 26.4 | 20.9 | 209 | 23 |
| December | 25.5 | 19.9 | 192 | 21 |
Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).
