St. Joseph's Mission · Public domainDry weather: only 14 inches of rain and melted snow a year in Tampico, less than in 94% of U.S. towns
January nights here settle around 26°. The seasons are far apart: from a winter night to a summer afternoon the average spans 60°. Winters are mild: January nights here are milder than in 65% of U.S. towns. If you like long walks, May, June and September offer highs of 68–76°.
A year in Tampico at a glance
Each month’s typical high and low, and what it brings.
What stands out about Tampico’s climate
Compared with towns across the U.S., with Tampico’s place in Washington beside it.
What a year in Tampico feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 196 frost-free days a year
In half of years the last 32° night comes by April 8 and the first by October 23. Frost dates and degree days from Yakima #2, WA, 15 miles away.
The 2023 USDA map puts Tampico’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 1°. 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 20 inches of snow a winter
Snow, measured at Yakima Air Terminal, WA, falls mostly in December. Precipitation (rain plus melted snow) adds up to 14 inches a year; December is the wettest month and August the driest. Rain or snow falls on about 72 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Tampico
87% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Yakima #2, WA.
Living with Tampico’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
196 frost-free days in zone 7a. The last frost comes by Apr 8 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 23.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 2.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Tampico from natural hazards, wildfire is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Tampico and similar climates
TownRatings has no climate map of the towns around Tampico yet.
Climates most like Tampico’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 |
|---|---|---|---|---|
| Tampico, WA | 26° | 85° | 14" | 20" |
| Bend, OR | 25° | 84° | 12" | 22" |
| Indian Hills, NV | 25° | 86° | 14" | 14" |
| Hamilton, MT | 20° | 86° | 13" | 17" |
| Silver City, NM | 26° | 87° | 16" | 13" |
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 Tampico averaged 1.4° warmer than the 1900s. The biggest change is in January (+4.5°).
A bigger shift than in 51% 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 Tampico compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Tampico’s place among Washington’s.
Tampico weather by month
Highs, lows and precipitation from NOAA’s grid at Tampico’s center; snow, wet days and snow on the ground from Yakima Air Terminal, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 38° | 26° | 2.2" | 6.2" | 10 | 11 | 24° – 38° |
| February | 44° | 27° | 1.7" | 2.7" | 7 | 4 | 26° – 42° |
| March | 51° | 31° | 1.2" | 0.6" | 7 | 0 | 36° – 48° |
| April | 59° | 35° | 1.1" | 0.0" | 6 | 0 | 41° – 55° |
| May | 68° | 42° | 0.9" | 0.0" | 6 | 0 | 50° – 61° |
| June | 75° | 47° | 0.6" | 0.0" | 5 | 0 | 57° – 70° |
| July | 85° | 52° | 0.4" | 0.0" | 2 | 0 | 60° – 73° |
| August | 84° | 52° | 0.2" | 0.0" | 2 | 0 | 62° – 73° |
| September | 76° | 45° | 0.3" | 0.0" | 3 | 0 | 57° – 65° |
| October | 61° | 36° | 1.1" | 0.1" | 6 | 0 | 43° – 55° |
| November | 46° | 30° | 1.6" | 3.0" | 8 | 2 | 33° – 43° |
| December | 36° | 24° | 2.4" | 7.7" | 10 | 9 | 25° – 35° |
| Year | 60° | 37° | 13.6" | 20.3" | 72 | 26 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 26° to 42°. September is the most reliable, staying within 8°.
Where Tampico’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 Tampico’s center.
- Snow: Yakima Air Terminal, WA.
- Frost dates, heating and cooling: Yakima #2, WA, 15 miles away.
- 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 Tampico’s climate
What is the weather like in Tampico?
A typical July afternoon reaches 85°, a January night drops to 26°, and about 20 inches of snow falls in a normal winter. Milder January nights than 65% of U.S. towns; cooler July afternoons than 55% of U.S. towns.
How cold does it get in Tampico in winter?
December nights average 24°. About 109 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 25°.
How much snow does Tampico get?
About 20 inches in a normal winter at Yakima Air Terminal, WA, most of it in December, with snow on the ground about 26 days a year.
How hot does it get in Tampico?
July, with a typical high of 85° and a low of 52°. About 38 days a year reach 90° (Yakima #2, WA).
When is the first and last frost in Tampico?
In half of years the last spring frost (32°) comes by April 8 and the first fall frost by October 23, about 196 frost-free days, at Yakima #2, WA.
What growing zone is Tampico in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 1°.
What is the best time of year to visit Tampico?
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 Tampico getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 51% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Tampico.
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.