Pelota Fronton · Photo: Ian Poellet · CC BY-SA 4.0Less rain and snow falls on Jordan Valley than on 93% of U.S. towns: 15 inches a year
Nights in January average 18°. In January, nights here are colder than in 69% of U.S. towns. Compared with 1901–2000, the average now sits 1.4° higher. Seedlings are safe outdoors from about May 22, with the first autumn frost due around September 28.
A year in Jordan Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jordan Valley’s climate
Compared with towns across the U.S., with Jordan Valley’s place in Oregon beside it.
What a year in Jordan Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 126 frost-free days a year
In half of years the last 32° night comes by May 22 and the first by September 28. Frost and day counts come from NOAA’s station at Sheaville 1 Se, OR, 10 miles from the town’s center, 210 ft higher.
The 2023 USDA map puts Jordan Valley’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −5°. 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 15 inches of rain a year
May is the wettest month and August the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Jordan Valley
92% 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 Sheaville 1 Se, OR.
Living with Jordan Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
126 frost-free days in zone 6a. The last frost comes by May 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 28.
Months with highs of 62–84° and lows of 40° or more: June and September. 2.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jordan Valley from natural hazards, river flooding is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jordan Valley and similar climates
TownRatings has no climate map of the towns around Jordan Valley yet.
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 Jordan Valley averaged 1.4° warmer than the 1900s. The biggest change is in January (+3.2°).
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 Jordan Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jordan Valley’s place among Oregon’s.
Jordan Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Jordan Valley’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 39° | 18° | 1.6" | 22° – 36° |
| February | 43° | 21° | 1.3" | 26° – 39° |
| March | 52° | 26° | 1.7" | 35° – 44° |
| April | 58° | 30° | 1.7" | 39° – 49° |
| May | 67° | 38° | 2.0" | 46° – 60° |
| June | 77° | 44° | 1.1" | 55° – 68° |
| July | 88° | 51° | 0.4" | 58° – 75° |
| August | 87° | 49° | 0.3" | 61° – 71° |
| September | 77° | 40° | 0.5" | 55° – 63° |
| October | 63° | 30° | 1.1" | 40° – 53° |
| November | 48° | 23° | 1.4" | 27° – 42° |
| December | 38° | 17° | 1.8" | 23° – 33° |
| Year | 61° | 32° | 14.8" |
How much a month can swing
A normal is an average. July swings the most: from 1991 to 2020 its average ranged from 58° to 75°. September is the most reliable, staying within 8°.
Where Jordan Valley’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 Jordan Valley’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sheaville 1 Se, OR, 10 miles from the town’s center, 210 ft higher; 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 Jordan Valley’s climate
What is the weather like in Jordan Valley?
A typical July afternoon reaches 88°, a January night drops to 18°. Colder January nights than 69% of U.S. towns; hotter July afternoons than 69% of U.S. towns.
How cold does it get in Jordan Valley in winter?
December nights average 17°. About 175 nights a year reach 32° or below and 3 reach 0° or below. In the coldest December of the last 30 years the month averaged 23°.
How hot does it get in Jordan Valley?
July, with a typical high of 88° and a low of 51°. About 37 days a year reach 90° and 2 reach 100° (Sheaville 1 Se, OR).
When is the first and last frost in Jordan Valley?
In half of years the last spring frost (32°) comes by May 22 and the first fall frost by September 28, about 126 frost-free days, at Sheaville 1 Se, OR.
What growing zone is Jordan Valley in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −5°.
What is the best time of year to visit Jordan Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Jordan Valley 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 Jordan Valley.
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.