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Hilo, HI weather, straight from the source.

Current conditions, official National Weather Service forecasts and alerts, rain timing, local radar, air quality, wind, humidity, sunrise, sunset, and the latest reported update for Hilo, HI. Always follow local warnings and emergency instructions.

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Weather status

Flood Watch

Flood Watch issued October 27 at 2:54AM HST until October 29 at 5:00AM HST by NWS Honolulu HI Expires Thu, 5:00 AM HST.

View alert detailsOfficial NWS ↗
Official NOAA / NWSWSR-88D DopplerUpdates every 5 minutes

Live Doppler radar

Animated Multi-Radar/Multi-Sensor reflectivity from the National Weather Service’s network of Doppler radars. Search a U.S. city, ZIP code, or street address to center the map on local weather, then zoom to neighborhood street detail.

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Low rain chance for the next 6 hours

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Doppler radar and warnings: NOAA/National Weather Service · Map: OpenFreeMap, OpenMapTiles and OpenStreetMap contributors. Radar can be delayed briefly during service updates.

MyUSA.us is not affiliated with or endorsed by NOAA or the National Weather Service. For life-threatening weather, follow official NWS alerts and local authorities.

What’s next

Hourly forecast

⌖ Hilo, HI

Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Hilo, HI. Forecasts and alerts update from NOAA and the National Weather Service.

70°Isolated Rain Showers20% rain
70°Scattered Rain Showers25% rain
70°Scattered Rain Showers25% rain
71°Scattered Rain Showers25% rain
74°Scattered Rain Showers25% rain
77°Scattered Rain Showers25% rain
80°Scattered Rain Showers25% rain
81°Scattered Rain Showers35% rain

Next 24 hours

Rain Timeline

Highest chance 69%

Most likely around 6 PM, 7 PM, 8 PM, 9 PM. Expected type: Rain.

20%Rain
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35%Rain
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69%Rain
69%Rain
69%Rain
69%Rain
69%Rain
69%Rain
54%Rain
54%Rain
54%Rain
54%Rain
54%Rain

Official NWS outlook

7-Day Forecast

High / low temperatures

Today

! NWS
81°70°

Scattered Rain Showers

Precipitation
69%
Wind
SW 2 to 6 mph
Sunrise
6:20 AM
Sunset
5:50 PM

Wed

82°71°

Occasional Rain Showers

Precipitation
78%
Wind
E 1 to 9 mph
Sunrise
6:20 AM
Sunset
5:49 PM

Thu

82°71°

Chance Showers And Thunderstorms

Precipitation
68%
Wind
N 5 mph
Sunrise
6:21 AM
Sunset
5:49 PM

Fri

80°70°

Chance Rain Showers

Precipitation
56%
Wind
NNE 7 mph
Sunrise
6:21 AM
Sunset
5:48 PM

Sat

80°69°

Chance Rain Showers

Precipitation
74%
Wind
NNE 2 to 7 mph
Sunrise
6:22 AM
Sunset
5:48 PM

Sun

81°69°

Scattered Rain Showers

Precipitation
42%
Wind
N 5 to 10 mph
Sunrise
6:22 AM
Sunset
5:47 PM

Mon

80°Low not available yet

Scattered Rain Showers

Precipitation
39%
Wind
NNE 6 to 9 mph
Sunrise
6:23 AM
Sunset
5:47 PM

Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.

Weather guidance for your areaPlan with the complete forecast

Use current official weather information for Hilo, HI before making weather-sensitive plans.

Safety guides

Weather for a healthier day

Healthy Weather

Real Feel70°F
Walking is not recommended now

Review the active Flood Watch before going outside. MyUSA.us will not recommend this activity while an NWS watch, warning, or emergency is active.

WindSW2 mph
Best walk timeReview the active Flood Watch before leaving

MyUSA.us will not recommend an outing window while an NWS watch, warning, or emergency is active. Follow the official alert and local instructions.

Official EPA AirNowLocal air qualityHilo, HI
View AQI +
Full air-quality page →AirNow details ↗Smoke and fire map ↗
More weather details
Wind gustsNot reported
Rain now20%next hour
Humidity93%current
Daily peak UV forecastChecking…EPA daily maximum · not a current reading

Wind impact: Light wind with little expected outdoor impact.

Full Healthy Weather guides and reminders →

“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.

Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gustNot reported
Pressure—
Visibility10.0 mi
Peak rain chance69%
Dew point68°F
Active alerts1

Official risk outlooks

These national tools add expert storm, heavy-rain and flooding context to your local forecast.

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Official tropical weather

Hurricane center

NOAA National Hurricane Center updates, outlooks, and storm resources in one place.

Simple, useful help

Weather safety guides

Quick answers for heat, storms, flooding and hurricane preparation—kept separate so your main weather page stays clean.

View all guides →

Hot weather

Heat and sun safety

Plan outdoor time and recognize dangerous heat.

Severe weather

Storms and lightning

Know when to move indoors and where to shelter.

Travel safety

Flooding and driving

Avoid flooded roads and prepare before a trip.

Stay weather-ready

Active NWS alerts

Weather safety ↗

Severe · Future

Flood Watch

Applies to: Niihau; Kauai Southwest; Kauai Mountains; Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; Big Island Summit; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island NorthIssued by: NWS Honolulu HIFlood Watch issued October 27 at 2:54AM HST until October 29 at 5:00AM HST by NWS Honolulu HI
Alert detailsA trough moving over the state will bring abundant tropical moisture today through at least Wednesday night. Heavy rain and isolated thunderstorms are expected to produce flash flooding, and while the greatest flood threat will be focused over Oahu and Maui County, all islands are at risk. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...All main Hawaiian Islands. * WHEN...From 6 AM HST this morning through late Wednesday night. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. * ADDITIONAL DETAILS... - Heavy showers and isolated thunderstorms with intense rain rates are expected to develop today and continue through Wednesday night as a trough moves over the state. While the greatest flood threat will be focused over Oahu and Maui County, all islands are at risk.
Safety instructionsYou should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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