Georgetown weather by month
What a typical year looks like in Georgetown, Idaho: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Bern, 16 km from Georgetown; records cover 1992–2026.
The year at a glance
- Precipitation a year
- 17.9 in454 mm
- Snow a year
- 91 in230 cm
- Last spring freeze
- Jun 17
- First fall freeze
- Aug 28
- Heating degree days
- 8,825
- Cooling degree days
- 138
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −14°−26° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Georgetown in January
Highs average 29°−2° and lows 7°−14°, with 1.7 in44 mm of precipitation and 23 in59 cm of snow in a typical January.
- Record high
- 49°9° (2003)
- Record low
- −30°−34° (2023)
- Heating degree days
- 1466
- Cooling degree days
- 0
Georgetown in February
Highs average 32°0° and lows 9°−13°, with 1.6 in41 mm of precipitation and 19 in48 cm of snow in a typical February.
- Record high
- 55°13° (2015)
- Record low
- −30°−34° (1996)
- Heating degree days
- 1252
- Cooling degree days
- 0
Georgetown in March
Highs average 42°6° and lows 18°−8°, with 1.5 in38 mm of precipitation and 9 in23 cm of snow in a typical March.
- Record high
- 76°24° (2026)
- Record low
- −21°−29° (2002)
- Heating degree days
- 1079
- Cooling degree days
- 0
Georgetown in April
Highs average 53°12° and lows 27°−3°, with 1.7 in44 mm of precipitation and 5 in12 cm of snow in a typical April.
- Record high
- 82°28° (2012)
- Record low
- −4°−20° (2008)
- Heating degree days
- 746
- Cooling degree days
- 0
Georgetown in May
Highs average 64°18° and lows 34°1°, with 2.3 in58 mm of precipitation and 1.3 in3.3 cm of snow in a typical May.
- Record high
- 89°32° (2003)
- Record low
- 15°−9° (2013)
- Heating degree days
- 487
- Cooling degree days
- 0
Georgetown in June
Highs average 75°24° and lows 40°5°, with 1.3 in33 mm of precipitation and 0.1 in0.3 cm of snow in a typical June.
- Record high
- 97°36° (2013)
- Record low
- 22°−6° (2002)
- Heating degree days
- 238
- Cooling degree days
- 10
Georgetown in July
Highs average 85°29° and lows 46°8°, with 0.67 in17 mm of precipitation in a typical July.
- Record high
- 101°38° (2026)
- Record low
- 28°−2° (1993)
- Heating degree days
- 59
- Cooling degree days
- 72
Georgetown in August
Highs average 84°29° and lows 45°7°, with 0.96 in24 mm of precipitation in a typical August.
- Record high
- 98°37° (2003)
- Record low
- 23°−5° (1992)
- Heating degree days
- 76
- Cooling degree days
- 52
Georgetown in September
Highs average 74°23° and lows 37°3°, with 1.4 in34 mm of precipitation and 0.1 in0.3 cm of snow in a typical September.
- Record high
- 96°36° (2022)
- Record low
- 15°−9° (1996)
- Heating degree days
- 304
- Cooling degree days
- 4
Georgetown in OctoberThis month
Highs average 59°15° and lows 27°−3°, with 1.7 in43 mm of precipitation and 2.9 in7.4 cm of snow in a typical October.
- Record high
- 88°31° (2010)
- Record low
- −13°−25° (2019)
- Heating degree days
- 688
- Cooling degree days
- 0
Georgetown in November
Highs average 43°6° and lows 19°−7°, with 1.4 in35 mm of precipitation and 9 in23 cm of snow in a typical November.
- Record high
- 70°21° (2020)
- Record low
- −18°−28° (1993)
- Heating degree days
- 1032
- Cooling degree days
- 0
Georgetown in December
Highs average 30°−1° and lows 9°−13°, with 1.7 in43 mm of precipitation and 21 in52 cm of snow in a typical December.
- Record high
- 59°15° (1998)
- Record low
- −21°−29° (2001)
- Heating degree days
- 1398
- Cooling degree days
- 0