Jamesport, MO climate
Jamesport has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 17°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeRight about normal today. The forecast high is 71°, and a typical Oct 1 in Jamesport peaks around 71°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Jamesport feels like
Winter
Spring
Summer
Fall
Jamesport 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 | 35° | 17° | 1.1" | 6.2" | 5 | 8 | 19° – 37° |
| February | 40° | 22° | 1.6" | 5.6" | 5 | 6 | 20° – 41° |
| March | 52° | 31° | 2.5" | 1.6" | 7 | 1 | 35° – 56° |
| April | 64° | 42° | 3.8" | 0.3" | 9 | 0 | 44° – 59° |
| May | 74° | 52° | 5.5" | 0 | 11 | 0 | 58° – 72° |
| June | 83° | 62° | 5.2" | 0 | 10 | 0 | 69° – 77° |
| July | 87° | 66° | 4.6" | 0 | 9 | 0 | 71° – 84° |
| August | 85° | 64° | 4.2" | 0 | 8 | 0 | 68° – 80° |
| September | 78° | 55° | 4.1" | 0 | 7 | 0 | 60° – 73° |
| October | 66° | 44° | 3.2" | 0 | 8 | 0 | 48° – 60° |
| November | 51° | 32° | 2.2" | 1.0" | 6 | 1 | 34° – 50° |
| December | 39° | 22° | 1.7" | 4.9" | 6 | 5 | 16° – 38° |
| Year | 63° | 42° | 39.7" | 19.6" | 89 | 21 |
“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 Jamesport
Jamesport gets 40 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 89 days a year. Snow covers the ground about 21 days of the year.
About 184 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 21. That leaves about 184 frost-free days for gardens, longer than 57% of U.S. towns.
Heating and cooling a home in Jamesport
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Jamesport, 85% of that work is heating and 15% 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.
Jamesport and its neighbors
Jamesport borders 5 towns with climate data. January nights across them vary by 0.6°. Grand River has the coldest January nights (17°) and Jackson the hottest July afternoons (88°). Jamesport’s January low is 17° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Jamesport 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 Jamesport averaged 0.7° warmer than the 1900s. The biggest change is in December (+1.7°). The shift is smaller than in 92% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Jamesport’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 35° to 56°. June is the most reliable, staying within 8°.
Common questions about Jamesport’s climate
What is the coldest month in Jamesport?
January, with a typical high of 35° and a low of 17°.
What is the hottest month in Jamesport?
July, with a typical high of 87° and a low of 66°. About 29 days a year reach 90°.
How much snow does Jamesport get?
About 20 inches in a normal winter, most of it in January.
When is the first frost in Jamesport?
In half of years the first 32° night comes by October 21, and the last spring frost by April 19.
What is the rainiest month in Jamesport?
May, with 5.5 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Jamesport itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Gallatin 1w, MO (11 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.