Temperature
Very hot by day, warm at night.
Arlington is most comfortable in spring and autumn. Summers are hot and winters are mild. Rain is spread through the year.

Very hot by day, warm at night.
Rainfall is lower than usual here.
Plenty of sun this month.
Very hot days, with humid stretches.
In August, afternoons feel about 96° and nights feel near 81°.
Predominantly clear skies.
August late afternoons are around 93°F, easing to about 91°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Arlington with San Antonio.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology