![]() ![]() Take precaution! The reflection from snow can almost double the UV radiation of the Sun. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. The peak daytime temperature will touch a warm 80. It's recommended to limit sun exposure when its radiation is at its peak during midday. Today, in Boise, a cloudless sky and sunshiny weather are expected. Note: In December, the maximum UV index of 2 translates into these guidelines:ĭespite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person. UV indexJanuary, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Boise. High End Amount Only a 1 in 10 Chance (10) of Higher Snowfall. This snowfall amount is determined by NWS forecasters to be the most likely outcome based on evaluation of data from computer models, satellite, radar, and other observations. SunshineThe month with the least sunshine is December, with an average of 5.5h of sunshine. This map is the official NWS snowfall forecast in inches during the time period shown on the graphic. On the last day of December, in Boise, sunrise is at 8:18 am and sunset at 5:17 pm MST. Year J F M A M J J A September O N D ☌elsius ☏ahrenheit. Long-term weather report - including weather conditions, temperature, pressure, humidity, precipitation, dewpoint, wind, visibility, and UV index data. On the first day of the month, sunrise is at 7:58 am and sunset at 5:09 pm. Boise, Idaho - Detailed 10 day weather forecast. DaylightDecember has the shortest days of the year, with an average of 9h and 0min of daylight. The month with the most snowfall is December, when snow falls for 9.2 days and typically aggregates up to 6.65" of snow. Snowfall January through April, November and December are months with snowfall in Boise. ![]() ![]() Throughout the year, there are 116.8 rainfall days, and 15.08" of precipitation is accumulated. Rainfall In Boise, Idaho, in December, it is raining for 10.4 days, with typically 2.09" of accumulated precipitation. HumidityIn December, the average relative humidity is 78%. TemperatureBoise's coldest weather arrives in December, when temperatures average a high of 34.7☏ and a low of 23.2☏. Snowfall remains significant, with the city witnessing 6.65" on average, calling for a white Christmas. The longer nights and the chilly weather invite the residents to get into the holiday spirits. Falling temperatures, shorter daylight hours, and increased cloud cover underscore the typical winter environment. Snowfall sees a significant boost, dominating overall precipitation. The month of December introduces Boise, Idaho, to winter. ![]()
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