Weather on December 20

Nampa, ID

55 Years of Data

Avg High
36°F
Avg Low
20°F
Warmest
1981
44°F avg
Coldest
1985
6°F avg

About This Date

December 20th in Nampa, ID typically brings cold winter weather, with average highs around 36°F and lows near 20°F. Over 44 years of records, the warmest December 20th was in 1981 (44°F average), while the coldest was 1985 (6°F) — a 38°F range across recorded history. Precipitation has occurred on 30% of recorded December 20th dates, with snow falling 7% of the time (heaviest snowfall: 1.5").

Planning for December 20th in Nampa, ID? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.

Warming Trend
1.1°F per decade on this date
YearHighLowAvgPrecipSnow
201445°36°40°0.64"
201333°12°23°
201237°19°28°
201146°16°31°
201037°25°31°1.07"1"
200938°27°32°
200835°15°25°
200745°36°40°1.04"
200633°13°23°
200533°25°29°0.41"1.5"
200437°30°34°
200348°25°36°
200240°25°32°
200143°35°39°
200036°22°29°
199945°30°37°
199824°16°
199737°23°30°
199632°21°27°0.15"0.3"
199539°19°29°
199445°28°36°
199342°16°29°
199229°17°0.03"
199140°18°29°
199029°16°0.48"
198953°14°34°
198831°19°25°0.1"
198735°18°26°
198628°24°26°
1985coldest13°-1°
198418°-1°0.03"
198330°18°0.18"
198243°31°37°
1981warmest49°39°44°0.94"
198022°21°21°
197939°22°30°
197835°17°26°
197739°15°27°
197640°24°
197522°18°20°
197443°33°38°0.76"
197342°32°37°
197240°28°34°0.03"
197132°18°25°
44 years of data from NAMPA SUGAR FACTORY

Browse Weather History

Weather data provided by NOAA Climate Data Online. Not for critical planning.

December 20th Weather in Nampa, ID - 55 Years of History