Less rain and snow falls on Lamont than on 93% of U.S. towns: 16 inches a year
July afternoons average 86°. By January nights alone, it runs milder than 62% of U.S. towns. Since 1901–2000, the year has warmed by 1.0°, most of all in January. Tender plants can go out after about April 29; in half of years the first frost comes by October 4.
A year in Lamont at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lamont’s climate
Compared with towns across the U.S., with Lamont’s place in Washington beside it.
What a year in Lamont feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 161 frost-free days a year
In half of years the last 32° night comes by April 29 and the first by October 4. Frost and day counts come from NOAA’s station at St John, WA, 17 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lamont’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 16 inches of snow a winter
Snow, measured at Ritzville 1 Sse, WA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 16 inches a year; December is the wettest month and August the driest. Rain or snow falls on about 91 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lamont
94% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at St John, WA.
Living with Lamont’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
161 frost-free days in zone 6b. The last frost comes by Apr 29 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 4.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lamont from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 16%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lamont and similar climates
TownRatings has no climate map of the towns around Lamont yet.
Climates most like Lamont’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Lamont, WA | 25° | 86° | 16" | 16" |
| Indian Hills, NV | 25° | 86° | 14" | 14" |
| Silver City, NM | 26° | 87° | 16" | 13" |
| Crooked River Ranch, OR | 26° | 87° | 11" | 14" |
| Hamilton, MT | 20° | 86° | 13" | 17" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Lamont averaged 1.0° warmer than the 1900s. The biggest change is in January (+3.7°).
A smaller shift than in 75% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Lamont compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lamont’s place among Washington’s.
Lamont weather by month
Highs, lows and precipitation from NOAA’s grid at Lamont’s center; snow, wet days and snow on the ground from Ritzville 1 Sse, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 36° | 25° | 2.0" | 5.9" | 12 | 20° – 37° |
| February | 42° | 26° | 1.4" | 1.9" | 9 | 22° – 41° |
| March | 51° | 30° | 1.7" | 1.2" | 9 | 32° – 46° |
| April | 59° | 35° | 1.3" | 0.1" | 8 | 42° – 54° |
| May | 68° | 42° | 1.4" | 0.0" | 7 | 50° – 60° |
| June | 76° | 47° | 1.1" | 0.0" | 6 | 57° – 70° |
| July | 86° | 53° | 0.4" | 0.0" | 3 | 62° – 74° |
| August | 85° | 52° | 0.3" | 0.0" | 3 | 63° – 71° |
| September | 76° | 45° | 0.5" | 0.0" | 4 | 56° – 65° |
| October | 60° | 36° | 1.3" | 0.0" | 7 | 42° – 55° |
| November | 45° | 29° | 1.9" | 2.4" | 11 | 29° – 44° |
| December | 36° | 24° | 2.2" | 4.2" | 12 | 23° – 35° |
| Year | 60° | 37° | 15.6" | 15.7" | 91 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 22° to 41°. August is the most reliable, staying within 8°.
Where Lamont’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Lamont’s center.
- Snow: Ritzville 1 Sse, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: St John, WA, 17 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Lamont’s climate
What is the weather like in Lamont?
A typical July afternoon reaches 86°, a January night drops to 25°, and about 16 inches of snow falls in a normal winter. Milder January nights than 62% of U.S. towns; hotter July afternoons than 57% of U.S. towns.
How cold does it get in Lamont in winter?
December nights average 24°. About 123 nights a year reach 32° or below and 2 reach 0° or below. In the coldest December of the last 30 years the month averaged 23°.
How much snow does Lamont get?
About 16 inches in a normal winter at Ritzville 1 Sse, WA, most of it in January.
How hot does it get in Lamont?
July, with a typical high of 86° and a low of 53°. About 28 days a year reach 90° and 2 reach 100° (St John, WA).
When is the first and last frost in Lamont?
In half of years the last spring frost (32°) comes by April 29 and the first fall frost by October 4, about 161 frost-free days, at St John, WA.
What growing zone is Lamont in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Lamont?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lamont getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 75% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lamont.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.