Photo: Lothar1976 · CC BY-SA 3.0Roby reaches 100° on about 27 days a year, more than 97% of U.S. towns
A typical July afternoon reaches 96°, a January night drops to 32°, and about 4 inches of snow falls in a normal winter.
A year in Roby at a glance
Each month’s typical high and low, and what it brings.
What stands out about Roby’s climate
Compared with towns across the U.S., with Roby’s place in Texas beside it.
What a year in Roby feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 243 frost-free days a year
In half of years the last 32° night comes by March 17 and the first by November 15. Frost and day counts come from NOAA’s station at Rotan, TX, 9 miles from the town’s center, at about the same height.
The 2023 USDA map puts Roby’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 13°. 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 4 inches of snow a winter
Snow, measured at Rotan, TX, falls mostly in February. Precipitation (rain plus melted snow) adds up to 23 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 45 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Roby
48% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from November through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Rotan, TX.
Living with Roby’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
243 frost-free days in zone 8a. The last frost comes by Mar 17 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 15.
Months with highs of 62–84° and lows of 40° or more: March, April, October and November. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Roby from natural hazards, drought is the largest share (37%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Roby and similar climates
TownRatings has no climate map of the towns around Roby yet.
Climates most like Roby’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 |
|---|---|---|---|---|
| Roby, TX | 32° | 96° | 23" | 3.5" |
| Oakhurst, CA | 34° | 95° | 29" | 2.5" |
| Sedona, AZ | 30° | 97° | 17" | 1.0" |
| Central Point, OR | 32° | 93° | 22" | 3.4" |
| Elk City, OK | 26° | 95° | 27" | 8.6" |
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 Roby averaged 1.3° warmer than the 1900s. The biggest change is in March (+2.6°).
A smaller shift than in 54% 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 Roby compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Roby’s place among Texas’.
Roby weather by month
Highs, lows and precipitation from NOAA’s grid at Roby’s center; snow, wet days and snow on the ground from Rotan, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 57° | 32° | 1.0" | 0.4" | 3 | 0 | 40° – 52° |
| February | 62° | 35° | 1.1" | 1.2" | 3 | 1 | 42° – 56° |
| March | 70° | 43° | 1.4" | 0.2" | 4 | 0 | 51° – 63° |
| April | 79° | 50° | 1.6" | 0.4" | 3 | 0 | 58° – 72° |
| May | 86° | 60° | 2.9" | 0.0" | 6 | 0 | 68° – 80° |
| June | 93° | 69° | 3.1" | 0.0" | 5 | 0 | 76° – 89° |
| July | 96° | 72° | 1.9" | 0.0" | 4 | 0 | 79° – 90° |
| August | 95° | 71° | 2.3" | 0.0" | 4 | 0 | 77° – 90° |
| September | 88° | 63° | 2.7" | 0.0" | 4 | 0 | 71° – 82° |
| October | 78° | 52° | 2.2" | 0.0" | 4 | 0 | 61° – 71° |
| November | 67° | 41° | 1.4" | 0.5" | 3 | 0 | 46° – 60° |
| December | 58° | 33° | 1.0" | 0.8" | 3 | 1 | 39° – 49° |
| Year | 77° | 52° | 22.6" | 3.5" | 45 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 42° to 56°. October is the most reliable, staying within 10°.
Where Roby’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 Roby’s center.
- Snow: Rotan, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Rotan, TX, 9 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 Roby’s climate
What is the weather like in Roby?
A typical July afternoon reaches 96°, a January night drops to 32°, and about 4 inches of snow falls in a normal winter. Milder January nights than 74% of U.S. towns; hotter July afternoons than 97% of U.S. towns.
How cold does it get in Roby in winter?
January nights average 32°. About 55 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 40°.
How much snow does Roby get?
About 3.5 inches in a normal winter at Rotan, TX, most of it in February, with snow on the ground about 1 days a year.
How hot does it get in Roby?
July, with a typical high of 96° and a low of 72°. About 111 days a year reach 90° and 27 reach 100° (Rotan, TX).
When is the first and last frost in Roby?
In half of years the last spring frost (32°) comes by March 17 and the first fall frost by November 15, about 243 frost-free days, at Rotan, TX.
What growing zone is Roby in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 13°.
What is the best time of year to visit Roby?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Roby getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 54% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Roby.
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.