John and Eva O'Bryne House · Photo: Tom Reedy · CC BY-SA 3.0Afternoon heat in Union Grove beats that of 92% of U.S. towns
In January the night’s low is typically 36°. Winters are mild: January nights here are milder than in 83% of U.S. towns. February has warmed most since 1901–2000, part of a 0.6° rise. Central heating does most of its work from December to January, in months below 50° on average.
A year in Union Grove at a glance
Each month’s typical high and low, and what it brings.
What stands out about Union Grove’s climate
Compared with towns across the U.S., with Union Grove’s place in Texas beside it.
What a year in Union Grove feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 251 frost-free days a year
In half of years the last 32° night comes by March 10 and the first by November 15. Frost and day counts come from NOAA’s station at Diana 2 W, TX, 12 miles from the town’s center, 100 ft lower.
The 2023 USDA map puts Union Grove’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 18°. 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 48 inches of rain a year
May is the wettest month and August the driest. Rain falls on about 93 days a year. Snow is rare: about 0.9" in a normal year at Longview #2, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Union Grove
49% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December 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 Diana 2 W, TX.
Living with Union Grove’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
251 frost-free days in zone 8b. The last frost comes by Mar 10 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, May, October and November.
Parks & trails →Of the yearly building losses FEMA expects in Union Grove from natural hazards, river flooding is the largest share (41%); heat waves, cold waves, winter storms and ice storms together are 17%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Union Grove and similar climates
TownRatings has no climate map of the towns around Union Grove yet.
Climates most like Union Grove’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 |
|---|---|---|---|---|
| Union Grove, TX | 36° | 93° | 48" | 0.9" |
| North Augusta, SC | 36° | 93° | 47" | 0.8" |
| Milledgeville, GA | 34° | 93° | 47" | 0.6" |
| Montgomery, AL | 36° | 92° | 52" | 0.3" |
| Lumberton, NC | 34° | 91° | 48" | 1.2" |
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 Union Grove averaged 0.6° warmer than the 1900s. The biggest change is in February (+1.3°).
A smaller shift than in 97% 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 Union Grove compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Union Grove’s place among Texas’.
Union Grove weather by month
Highs, lows and precipitation from NOAA’s grid at Union Grove’s center; snow, wet days and snow on the ground from Longview #2, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 57° | 36° | 3.9" | 0.1" | 8 | 0 | 42° – 53° |
| February | 61° | 40° | 4.0" | 0.7" | 10 | 0 | 42° – 58° |
| March | 69° | 47° | 4.6" | 0.0" | 9 | 0 | 52° – 65° |
| April | 76° | 53° | 4.1" | 0.0" | 7 | 0 | 60° – 70° |
| May | 83° | 62° | 4.8" | 0.0" | 8 | 0 | 69° – 77° |
| June | 90° | 70° | 4.2" | 0.0" | 9 | 0 | 77° – 85° |
| July | 93° | 73° | 3.0" | 0.0" | 7 | 0 | 79° – 89° |
| August | 94° | 72° | 2.8" | 0.0" | 7 | 0 | 78° – 91° |
| September | 88° | 65° | 3.5" | 0.0" | 5 | 0 | 73° – 82° |
| October | 78° | 54° | 4.7" | 0.0" | 7 | 0 | 62° – 72° |
| November | 67° | 45° | 3.9" | 0.0" | 6 | 0 | 50° – 61° |
| December | 59° | 38° | 4.5" | 0.1" | 9 | 0 | 40° – 54° |
| Year | 76° | 55° | 47.9" | 0.9" | 93 | 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 58°. May is the most reliable, staying within 8°.
Where Union Grove’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 Union Grove’s center.
- Snow: Longview #2, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Diana 2 W, TX, 12 miles from the town’s center, 100 ft lower; 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 Union Grove’s climate
What is the weather like in Union Grove?
A typical July afternoon reaches 93°, a January night drops to 36°, and snow is almost unheard of. Milder January nights than 83% of U.S. towns; hotter July afternoons than 92% of U.S. towns.
How cold does it get in Union Grove in winter?
January nights average 36°. About 39 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 42°.
How much snow does Union Grove get?
About 0.9 inches in a normal winter at Longview #2, TX, so most winters see none.
How hot does it get in Union Grove?
July, with a typical high of 93° and a low of 73°. About 83 days a year reach 90° and 5 reach 100° (Diana 2 W, TX).
When is the first and last frost in Union Grove?
In half of years the last spring frost (32°) comes by March 10 and the first fall frost by November 15, about 251 frost-free days, at Diana 2 W, TX.
What growing zone is Union Grove in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 18°.
What is the best time of year to visit Union Grove?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Union Grove getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 97% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Union Grove.
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.