September is the hottest month for Hilo with an average high temperature of 81.7°, which ranks it as cooler than most places in Hawaii. In Hilo, there are 12 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hilo are December, April and March.

August is the hottest month for Renton with an average high temperature of 76.5°, which ranks it as about average compared to other places in Washington. In Renton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Renton are August, July and September.

February has the coldest nighttime temperatures for Hilo with an average of 62.8°. This is about average compared to other places in Hawaii.

December has the coldest nighttime temperatures for Renton with an average of 34.8°. This is warmer than most places in Washington.

In Hilo, there are 0.0 days annually when the high temperature is over 90°, which is cooler than most places in Hawaii.

In Renton, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

In Hilo, there are 0.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Hawaii.

In Renton, there are 32.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Hilo, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Hawaii.

In Renton, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

November is the wettest month in Hilo with 15.9 inches of rain, and the driest month is June with 8.4 inches. The wettest season is Winter with 27% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 143.1 inches in Hilo means that it is one of the wettest places in Hawaii.


November is the wettest month in Renton with 7.2 inches of rain, and the driest month is July with 0.9 inches. The wettest season is Spring with 38% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 43.6 inches in Renton means that it is about average compared to other places in Washington.

April is the rainiest month in Hilo with 21.9 days of rain, and February is the driest month with only 14.9 rainy days. There are 235.8 rainy days annually in Hilo, which is rainier than most places in Hawaii. The rainiest season is Autumn when it rains 27% of the time and the driest is Spring with only a 21% chance of a rainy day.

November is the rainiest month in Renton with 19.3 days of rain, and August is the driest month with only 5.1 rainy days. There are 160.8 rainy days annually in Renton, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 13% chance of a rainy day.

There is rarely any recorded snowfall in Hilo, ranking it as one of the least snowy places in Hawaii.

An annual snowfall of 5.6 inches in Renton means that it is about average compared to other places in Washington.

Any measurable snowfall is a rare occurance in Hilo.

December is the snowiest month in Renton with 1.9 inches of snow, and 4 months of the year have significant snowfall.

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