Granger sits near the bottom of U.S. towns for precipitation, with 8 inches a year
On a normal January night the air cools to about 27°. Only 64° separates winter nights from summer afternoons. In July, afternoons here are warmer than in 78% of U.S. towns. Keep the boiler serviced for the months from November to March, which average under 50°.
A year in Granger at a glance
Each month’s typical high and low, and what it brings.
What stands out about Granger’s climate
Compared with towns across the U.S., with Granger’s place in Washington beside it.
What a year in Granger feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 160 frost-free days a year
In half of years the last 32° night comes by April 30 and the first by October 8. Frost and day counts come from NOAA’s station at Sunnyside #2, WA, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Granger’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 4°. 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 10 inches of snow a winter
Snow, measured at Moxee City 10 E, WA, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 8 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 59 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Granger
93% 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 Sunnyside #2, WA.
Living with Granger’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
160 frost-free days in zone 7a. The last frost comes by Apr 30 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 8.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 2.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Granger from natural hazards, river flooding is the largest share (70%); heat waves, cold waves, winter storms and ice storms together are 15%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Granger and similar climates
TownRatings has no climate map of the towns around Granger yet.
Climates most like Granger’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 |
|---|---|---|---|---|
| Granger, WA | 27° | 90° | 8" | 9.9" |
| Sparks, NV | 25° | 92° | 8" | 6.8" |
| Williamson, AZ | 26° | 91° | 13" | 10" |
| Rio Rancho, NM | 22° | 92° | 10" | 7.7" |
| Middleton, ID | 24° | 93° | 11" | 9.7" |
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 Granger averaged 1.0° warmer than the 1900s. The biggest change is in January (+3.2°).
A smaller shift than in 80% 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 Granger compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Granger’s place among Washington’s.
Granger weather by month
Highs, lows and precipitation from NOAA’s grid at Granger’s center; snow, wet days and snow on the ground from Moxee City 10 E, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 40° | 27° | 1.0" | 3.2" | 7 | 9 | 23° – 38° |
| February | 47° | 28° | 0.7" | 1.2" | 5 | 2 | 24° – 44° |
| March | 57° | 33° | 0.6" | 0.4" | 5 | 0 | 36° – 50° |
| April | 65° | 39° | 0.6" | 0.0" | 5 | 0 | 47° – 58° |
| May | 74° | 47° | 0.8" | 0.0" | 6 | 0 | 55° – 66° |
| June | 81° | 53° | 0.6" | 0.0" | 4 | 0 | 63° – 75° |
| July | 90° | 59° | 0.2" | 0.0" | 2 | 0 | 67° – 79° |
| August | 89° | 57° | 0.2" | 0.0" | 2 | 0 | 67° – 76° |
| September | 79° | 49° | 0.3" | 0.0" | 3 | 0 | 60° – 68° |
| October | 65° | 39° | 0.7" | 0.0" | 6 | 0 | 46° – 58° |
| November | 49° | 31° | 0.9" | 1.7" | 7 | 1 | 34° – 46° |
| December | 39° | 26° | 1.2" | 3.4" | 8 | 7 | 26° – 38° |
| Year | 64° | 41° | 7.7" | 9.9" | 59 | 20 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 24° to 44°. September is the most reliable, staying within 8°.
Where Granger’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 Granger’s center.
- Snow: Moxee City 10 E, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sunnyside #2, WA, 8 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 Granger’s climate
What is the weather like in Granger?
A typical July afternoon reaches 90°, a January night drops to 27°, and about 10 inches of snow falls in a normal winter. Milder January nights than 67% of U.S. towns; hotter July afternoons than 78% of U.S. towns.
How cold does it get in Granger in winter?
December nights average 26°. About 143 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 26°.
How much snow does Granger get?
About 9.9 inches in a normal winter at Moxee City 10 E, WA, most of it in January and December, with snow on the ground about 20 days a year.
How hot does it get in Granger?
July, with a typical high of 90° and a low of 59°. About 33 days a year reach 90° and 3 reach 100° (Sunnyside #2, WA).
When is the first and last frost in Granger?
In half of years the last spring frost (32°) comes by April 30 and the first fall frost by October 8, about 160 frost-free days, at Sunnyside #2, WA.
What growing zone is Granger in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 4°.
What is the best time of year to visit Granger?
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 Granger getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Granger.
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.