Hawaii County climate forecast is September 23, 2021

Hilo

Today: Mostly cloudy. Showers probably in the morning, then scattered showers in the afternoon. Highs from 80 to 86 near shore to 68 to 73 at 4000 feet. Northeast winds up to 15 miles per hour. Chance of rain 70 percent.

Tonight: Mostly cloudy with showers likely. Lows of around 68 near the shore to around 54 at 4000 feet. Northwest winds up to 15 miles per hour. Chance of rain 70 percent.

Friday: Mostly cloudy. Showers probably in the morning, then scattered showers in the afternoon. Highs from 80 to 86 near shore to 68 to 73 at 4000 feet. Northeast winds up to 15 miles per hour. Chance of rain 70 percent.

Kona

Today: Mostly sunny in the morning, then mostly cloudy with a few showers in the afternoon. Highs from 86 near shore to 73 near 5000 feet. In the afternoon the northwest wind blows at up to 16 km / h on the southwest. 50 percent chance of rain.

Tonight: Partly cloudy. Isolated showers in the evening. Lows of 68 to 74 near shore to about 54 near 5000 feet. Breeze. Chance of rain 20 percent.

THE ARTICLE CONTINUES BELOW THE ADVERT

Friday: Mostly sunny in the morning, then mostly cloudy with a few showers in the afternoon. Highs from 86 near shore to 73 near 5000 feet. Breeze. 50 percent chance of rain.

Waimea

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: Mostly cloudy. Airy. Isolated showers in the morning, then isolated showers in the afternoon. Heights from 82 near shore to 73 to 80 near 3000 feet. East winds 10 to 20 miles per hour. 50 percent chance of rain.

Tonight: airy. Mostly cloudy with a few showers. Lows of 67 near shore to 54 to 61 near 3000 feet. East winds 10 to 20 miles per hour, decreasing to as low as 20 miles per hour after midnight. 50 percent chance of rain.

Friday: Mostly cloudy. Airy. Isolated showers in the morning, then isolated showers in the afternoon. Heights from 82 near shore to 73 to 80 near 3000 feet. East wind up to 20 km / h. 50 percent chance of rain.

Kohala

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: Mostly cloudy. Airy. Isolated showers in the morning, then isolated showers in the afternoon. Heights from 82 near shore to 73 to 80 near 3000 feet. East winds 10 to 20 miles per hour. 50 percent chance of rain.

Tonight: airy. Mostly cloudy with a few showers. Lows of 67 near shore to 54 to 61 near 3000 feet. East winds 10 to 20 miles per hour, decreasing to as low as 20 miles per hour after midnight. 50 percent chance of rain.

Friday: Mostly cloudy. Airy. Isolated showers in the morning, then isolated showers in the afternoon. Heights from 82 near shore to 73 to 80 near 3000 feet. East wind up to 20 km / h. 50 percent chance of rain.

Southern big island

Today: Mostly sunny in the morning, then partly sunny in the afternoon with a few showers. Altitudes around 85 near shore to 74 near 5000 feet. East wind up to 15 km / h. Chance of rain 20 percent.

Tonight: Partly cloudy. Lows of about 68 near shore to about 53 near 5000 feet. Northeast winds up to 15 miles per hour.

Friday: airy. Mostly sunny in the morning, then partly sunny in the afternoon with a few showers. Altitudes around 85 near shore to 74 near 5000 feet. East wind up to 25 km / h. Chance of rain 20 percent.

feedback

Today: Mostly cloudy. Showers probably in the morning, then scattered showers in the afternoon. Highs from 80 to 86 near shore to 68 to 73 at 4000 feet. Northeast winds up to 15 miles per hour. Chance of rain 70 percent.

Tonight: Mostly cloudy with showers likely. Lows of around 68 near the shore to around 54 at 4000 feet. Northwest winds up to 15 miles per hour. Chance of rain 70 percent.

Friday: Mostly cloudy. Showers probably in the morning, then scattered showers in the afternoon. Highs from 80 to 86 near shore to 68 to 73 at 4000 feet. Northeast winds up to 15 miles per hour. Chance of rain 70 percent.

Waikoloa

Today: Mostly sunny in the morning, then partly sunny. Airy. Heights from 85 near shore to 69 to 75 over 4000 feet. Northeast winds up to 20 miles per hour.

Tonight: Partly cloudy. Airy. Lows of 69 to 74 near shore to 50 to 57 over 4000 feet. Southeasterly winds up to 20 miles per hour.

Friday: Mostly sunny in the mornings, then partly sunny. Airy. Heights from 85 near shore to 69 to 75 over 4000 feet. Northeast winds up to 20 miles per hour.

summary

Windy trade winds will persist throughout the weekend, with clouds and showers favoring windward and mauka locations overnight in the morning periods. Very little moisture making it into leeward areas results in the prevailing drought conditions. A slight increase in shower cover on the windward side cannot be ruled out from late Saturday night until the second half of the weekend, as a weak trough runs south. A return of the drier trade wind conditions is expected early next week.

discussion

The guidelines stay in good agreement through the weekend, showing rising upper heights as the upper ridge protrudes westward over the region and an upper low emerges to the west. Lots of dry mid-to-high air, combined with strong settlement inversion and a surface ridge anchored north of the area, will support the stable trade wind pattern that persists through the first half of the weekend. The northern periphery of an area of ​​increased low humidity coupled with a weak trough that runs south from Sunday to Monday can result in better windward and mauka showers – best chance over Big Island. A return of drier trade wind conditions will be shown early next week as the surface trough continues and diminishes to the west.

aviation

Since an almost stationary high pressure center remains far to the north of the area, trade winds will continue to this day and beyond in the moderate to locally breezy area. VFR will prevail in most areas most of the time, but lighter clouds and showers that move with the rides will from time to time bring MVFR conditions mainly in windward and mauka sections.
An AIRMET remains in force nationwide for low turbulence in the lee of the mountains. However, this will likely be canceled with the next issue.

marine

The Small Craft Advisory (SCA) for traditionally windier waters around Maui and Big Island has been canceled. The seas will approach the SCA threshold again on Friday due to a combination of north-northwest swell and trade wind waves.
A northwest swell will gradually subside today. A larger north-northwest swell should fill in tonight and peak on Friday, with surf likely below recommended levels along the exposed north and west coasts of the smaller islands. This swell will slowly turn into the weekend. The surf on the south-facing banks will remain increased in the second half of the week, as a long south swell runs through it. This should peak today before it turns into the weekend. Surfing along the east facing coastlines remains small and choppy due to the fresh / heavy trade on-site and just upstream of the state.

HFO watches / warnings / notices

None.

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Data courtesy of NOAA.gov

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