Smiths Ferry, ID climate
Smiths Ferry has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 19°, and about 69 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decade9° warmer than normal today. The forecast high is 73°, and a typical Oct 1 in Smiths Ferry peaks around 64°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Smiths Ferry feels like
Winter
Spring
Summer
Fall
Smiths Ferry 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 | 33° | 19° | 4.0" | 22.8" | 12 | 30 | 19° – 33° |
| February | 38° | 21° | 3.3" | 10.2" | 11 | 24 | 24° – 37° |
| March | 46° | 26° | 3.4" | 3.5" | 11 | 13 | 31° – 42° |
| April | 53° | 31° | 2.5" | 0.4" | 10 | 0 | 36° – 48° |
| May | 63° | 39° | 2.4" | 0 | 9 | 0 | 44° – 57° |
| June | 72° | 45° | 1.7" | 0 | 7 | 0 | 54° – 67° |
| July | 83° | 51° | 0.5" | 0 | 3 | 0 | 56° – 74° |
| August | 83° | 51° | 0.5" | 0 | 2 | 0 | 60° – 70° |
| September | 73° | 43° | 1.0" | 0 | 4 | 0 | 54° – 63° |
| October | 57° | 34° | 2.0" | 0.3" | 7 | 0 | 38° – 52° |
| November | 41° | 26° | 3.3" | 8.0" | 11 | 4 | 26° – 40° |
| December | 32° | 19° | 4.7" | 24.2" | 13 | 23 | 19° – 30° |
| Year | 56° | 34° | 29.4" | 69.4" | 98 | 94 |
“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 Smiths Ferry
Smiths Ferry gets 29 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 98 days a year. Snow covers the ground about 94 days of the year.
About 102 frost-free days a year
In half of years the last 32° night comes by June 1 and the first one by September 10. That leaves about 102 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Smiths Ferry
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Smiths Ferry, 96% of that work is heating and 4% 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 Smiths Ferry 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 Smiths Ferry averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.8°). The shift is smaller than in 54% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Smiths Ferry’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. July swings the most: between 1991 and 2020 its average temperature ranged from 56° to 74°. September is the most reliable, staying within 9°.
Common questions about Smiths Ferry’s climate
What is the coldest month in Smiths Ferry?
December, with a typical high of 32° and a low of 19°.
What is the hottest month in Smiths Ferry?
July, with a typical high of 83° and a low of 51°. About 46 days a year reach 90°.
How much snow does Smiths Ferry get?
About 69 inches in a normal winter, most of it in December.
When is the first frost in Smiths Ferry?
In half of years the first 32° night comes by September 10, and the last spring frost by June 1.
What is the rainiest month in Smiths Ferry?
December, with 4.7 inches of rain and melted snow. The year totals 29 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Smiths Ferry itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Garden Valley, ID (15 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.