A.K. Wilson Building · Photo: Ian Poellet · CC BY-SA 4.0Midwinter lows in Dallas stay above those of 82% of U.S. towns
Peak summer warmth arrives in July, with afternoons near 82°. Rain follows the seasons: December brings about 39 times as much as July. Precipitation is plentiful here, more than falls on 78% of U.S. towns. Seedlings are safe outdoors from about April 16, with the first autumn frost due around November 1.
A year in Dallas at a glance
Each month’s typical high and low, and what it brings.
What stands out about Dallas’ climate
Compared with towns across the U.S., with Dallas’ place in Oregon beside it.
What a year in Dallas feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 199 frost-free days a year
In half of years the last 32° night comes by April 16 and the first by November 1. Frost and day counts come from NOAA’s station at Dallas 2 Ne, OR, 2.0 miles from the town’s center, at about the same height.
The 2023 USDA map puts Dallas’ center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 19°. 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 Falls City 2 Ssw, OR, falls mostly in December. Precipitation (rain plus melted snow) adds up to 49 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 162 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Dallas
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 Dallas 2 Ne, OR.
Living with Dallas’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
199 frost-free days in zone 8b. The last frost comes by Apr 16 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 1.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 2.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Dallas from natural hazards, earthquakes are the largest share (55%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Dallas and similar climates
TownRatings has no climate map of the towns around Dallas yet.
Climates most like Dallas’, 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 |
|---|---|---|---|---|
| Dallas, OR | 36° | 82° | 49" | 9.6" |
| Brigantine, NJ | 28° | 83° | 45" | 10" |
| Fletcher, NC | 27° | 84° | 50" | 10" |
| Ocean City, MD | 30° | 86° | 46" | 10" |
| Big Stone Gap, VA | 26° | 84° | 52" | 9.2" |
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 Dallas averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.5°).
A smaller shift than in 60% 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 Dallas compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Dallas’ place among Oregon’s.
Dallas weather by month
Highs, lows and precipitation from NOAA’s grid at Dallas’ center; snow, wet days and snow on the ground from Falls City 2 Ssw, OR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 47° | 36° | 7.9" | 2.6" | 20 | 36° – 46° |
| February | 51° | 36° | 5.6" | 1.8" | 17 | 37° – 49° |
| March | 56° | 38° | 5.5" | 1.1" | 20 | 43° – 52° |
| April | 61° | 40° | 3.8" | 0.0" | 18 | 46° – 57° |
| May | 68° | 45° | 2.1" | 0.0" | 12 | 52° – 61° |
| June | 73° | 49° | 1.2" | 0.0" | 8 | 57° – 68° |
| July | 82° | 53° | 0.2" | 0.0" | 2 | 61° – 72° |
| August | 83° | 53° | 0.4" | 0.0" | 3 | 65° – 72° |
| September | 77° | 49° | 1.3" | 0.0" | 7 | 59° – 66° |
| October | 64° | 43° | 3.8" | 0.0" | 15 | 50° – 59° |
| November | 53° | 39° | 7.3" | 0.5" | 19 | 40° – 51° |
| December | 46° | 35° | 9.4" | 3.6" | 21 | 36° – 44° |
| Year | 63° | 43° | 48.5" | 9.6" | 162 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 37° to 49°. September is the most reliable, staying within 6°.
Where Dallas’ 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 Dallas’ center.
- Snow: Falls City 2 Ssw, OR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Dallas 2 Ne, OR, 2.0 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 Dallas’ climate
What is the weather like in Dallas?
A typical July afternoon reaches 82°, a January night drops to 36°, and about 10 inches of snow falls in a normal winter. Milder January nights than 82% of U.S. towns; cooler July afternoons than 77% of U.S. towns.
How cold does it get in Dallas in winter?
December nights average 35°. About 49 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 36°.
How much snow does Dallas get?
About 9.6 inches in a normal winter at Falls City 2 Ssw, OR, most of it in December.
How hot does it get in Dallas?
July, with a typical high of 82° and a low of 53°. About 17 days a year reach 90° and 1 reach 100° (Dallas 2 Ne, OR).
When is the first and last frost in Dallas?
In half of years the last spring frost (32°) comes by April 16 and the first fall frost by November 1, about 199 frost-free days, at Dallas 2 Ne, OR.
What growing zone is Dallas in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 19°.
What is the best time of year to visit Dallas?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Dallas getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Dallas.
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.