Jewell Junction, IA climate
Jewell Junction has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 10°, and about 32 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Jewell Junction feels like
Winter
Spring
Summer
Fall
Jewell Junction weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 27° | 10° | 0.9" | 8.4" | 7 | 20 | 8° – 31° |
| February | 32° | 14° | 1.1" | 6.9" | 6 | 17 | 12° – 34° |
| March | 45° | 26° | 2.0" | 4.4" | 7 | 8 | 28° – 50° |
| April | 60° | 37° | 3.8" | 1.3" | 10 | 1 | 39° – 55° |
| May | 71° | 48° | 5.1" | 0 | 12 | 0 | 54° – 67° |
| June | 80° | 59° | 5.5" | 0 | 11 | 0 | 66° – 73° |
| July | 83° | 62° | 4.2" | 0 | 9 | 0 | 68° – 78° |
| August | 81° | 59° | 4.5" | 0 | 9 | 0 | 65° – 75° |
| September | 75° | 51° | 3.4" | 0 | 7 | 0 | 57° – 68° |
| October | 62° | 39° | 2.6" | 0.4" | 8 | 0 | 44° – 56° |
| November | 46° | 27° | 1.8" | 1.7" | 6 | 2 | 27° – 48° |
| December | 32° | 16° | 1.3" | 9.1" | 6 | 15 | 8° – 32° |
| Year | 58° | 37° | 36.2" | 32.2" | 98 | 63 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Jewell Junction
Jewell Junction gets 36 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 98 days a year. Snow covers the ground about 63 days of the year.
About 150 frost-free days a year
In half of years the last 32° night comes by May 3 and the first one by October 2. That leaves about 150 frost-free days for gardens, shorter than 81% of U.S. towns.
Heating and cooling a home in Jewell Junction
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Jewell Junction, 92% of that work is heating and 8% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Jewell Junction compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Jewell Junction averaged 0.7° warmer than the 1900s. The biggest change is in December (+2.4°). The shift is smaller than in 88% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Jewell Junction’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 8° to 32°. June is the most reliable, staying within 7°.
Common questions about Jewell Junction’s climate
What is the coldest month in Jewell Junction?
January, with a typical high of 27° and a low of 10°.
What is the hottest month in Jewell Junction?
July, with a typical high of 83° and a low of 62°. About 13 days a year reach 90°.
How much snow does Jewell Junction get?
About 32 inches in a normal winter, most of it in December.
When is the first frost in Jewell Junction?
In half of years the first 32° night comes by October 2, and the last spring frost by May 3.
What is the rainiest month in Jewell Junction?
June, with 5.5 inches of rain and melted snow. The year totals 36 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Jewell Junction itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Jewell, IA (1 mi, snow) and Webster City, IA (14 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.