Arlington, TX Climate & Monthly Averages
Arlington has a humid subtropical climate. July is the hottest month, averaging 96° by day; January is the coldest at 56°.
Arlington's climate is a story of contrasts
Arlington runs one of the wider annual swings in our dataset: 22°C separates the average July from the average January. Afternoons reach 96°F (35°C) at the peak of summer and 56°F (13°C) at the depth of winter, with 105 days of measurable precipitation through the year.
July
96° by day 78° at nightJanuary
56° by day 38° at nightThe two ends of the year
January is the coolest month, with highs of 56°F (13°C) and lows near 38°F (3°C). Warmth peaks in July: highs of 96°F (35°C), lows of 78°F (26°C). The gridded 2015-2024 daily record for this location tops out at 109°F (43°C) and bottoms at -3°F (-20°C) - decade extremes, not all-time station records. Relative humidity averages 65% across the year, drier than about 79% of the cities we track.
July is the brightest month at 12.3 hours of sun a day, against an annual average of 9.3. Snowfall is rare but not unheard of. Four of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is March through April.
More climate facts for Arlington
- Hottest month: July - highs near 96°F (35°C)
- Coldest month: January - highs near 56°F (13°C)
- Decade extremes (2015-2024): 109°F (43°C) high · -3°F (-20°C) low
- Wettest month: May (14 rainy days) · Sunniest: July (12.3 h sun/day)
- Climate type: humid subtropical
- Annual swing: 22°C between the average warmest and coolest month · day to night: 10°C
- Months averaging 30°C or hotter: 4
- Average humidity: 65%
Four distinct parts of the year in Arlington
Spring (March through May)
Spring in Arlington brings comfortable warmth, with daytime highs averaging 76°F (24°C) and nights around 58°F (14°C); rain falls on around 34 of the 90 days.
Summer (June through August)
Summer turns very hot here - highs near 94°F (34°C), nights near 76°F (25°C), and expect showers on roughly 26 days across the season. Daylight is generous - around 11.9 hours of sun a day.
Fall (September through November)
Fall settles into easy warmth here - highs near 78°F (26°C), nights near 61°F (16°C), and expect showers on roughly 22 days across the season.
Winter (December through February)
Winter is crisp but comfortable here - highs near 59°F (15°C), nights near 41°F (5°C), and expect showers on roughly 22 days across the season.
Arlington temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Choosing a season in Arlington
Best time to visit Arlington
Aim for February to April and October to December if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 69°F (20°C) against roughly 9 wet days a month. For the same question asked the other way round, see where else is warm in February.
What to pack
Pack for Arlington with lightweight, breathable clothing and serious sun protection, a warm jacket and layers for the cooler season and a compact umbrella or rain shell. July nights average 78°F (26°C), so evenings rarely match the afternoons.
Monthly highs, lows and seasonal change
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 56° | 38° | 7 | 2.4 in | 7.5 h/day | 10.2 h | 21% | 64% |
| February | 61° | 41° | 8 | 3.5 in | 7.3 h/day | 11.0 h | 30% | 66% |
| March | 70° | 51° | 10 | 4.0 in | 8.4 h/day | 11.9 h | 34% | 66% |
| April | 76° | 57° | 10 | 5.4 in | 9.3 h/day | 12.9 h | 33% | 66% |
| May | 83° | 65° | 14 | 7.2 in | 9.6 h/day | 13.8 h | 45% | 72% |
| June | 90° | 73° | 10 | 4.0 in | 11.6 h/day | 14.3 h | 34% | 68% |
| July | 96° | 78° | 7 | 1.7 in | 12.3 h/day | 14.1 h | 23% | 58% |
| August | 95° | 78° | 9 | 3.3 in | 11.7 h/day | 13.3 h | 29% | 59% |
| September | 89° | 72° | 7 | 3.2 in | 10.5 h/day | 12.3 h | 23% | 62% |
| October | 79° | 61° | 7 | 5.8 in | 9.3 h/day | 11.3 h | 24% | 60% |
| November | 67° | 49° | 8 | 3.4 in | 7.6 h/day | 10.4 h | 26% | 69% |
| December | 61° | 43° | 7 | 3.2 in | 7.0 h/day | 10.0 h | 23% | 68% |
Arlington from the coldest month to the hottest
Each card shows the average high and low. The bar places that month between Arlington's coldest night and warmest afternoon.
January
- Rain
- 7 days
- Sunshine
- 7.5 h
- Daylight
- 10.2 h
February
- Rain
- 8 days
- Sunshine
- 7.3 h
- Daylight
- 11.0 h
March
- Rain
- 10 days
- Sunshine
- 8.4 h
- Daylight
- 11.9 h
April
- Rain
- 10 days
- Sunshine
- 9.3 h
- Daylight
- 12.9 h
May
- Rain
- 14 days
- Sunshine
- 9.6 h
- Daylight
- 13.8 h
June
- Rain
- 10 days
- Sunshine
- 11.6 h
- Daylight
- 14.3 h
July
- Rain
- 7 days
- Sunshine
- 12.3 h
- Daylight
- 14.1 h
August
- Rain
- 9 days
- Sunshine
- 11.7 h
- Daylight
- 13.3 h
September
- Rain
- 7 days
- Sunshine
- 10.5 h
- Daylight
- 12.3 h
October
- Rain
- 7 days
- Sunshine
- 9.3 h
- Daylight
- 11.3 h
November
- Rain
- 8 days
- Sunshine
- 7.6 h
- Daylight
- 10.4 h
December
- Rain
- 7 days
- Sunshine
- 7.0 h
- Daylight
- 10.0 h
Looking for warmer alternatives? Browse warm places by month, or compare Arlington's coolest part of the year: January, February, December.
Where Arlington sits among other climates
- Arlington sits close to the middle of our dataset on most measures: 67°F (20°C) as an annual average, 47.1 inches (1196 mm) of precipitation and 9.3 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.