Little Rock weather by month
Little Rock runs from about 3°C in January to 27°C in August, with January the wettest month at 230 mm.
warmest month
August
27°C
coolest month
January
3°C
wettest month
January
230 mm
worst air month
August
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 3°C | 230 mm | 194 h | 9 |
| February | 11°C | 70 mm | 211 h | 10 |
| March | 13°C | 104 mm | 243 h | 6 |
| April | 18°C | 169 mm | 258 h | 6 |
| May | 23°C | 214 mm | 309 h | 7 |
| June | 26°C | 48 mm | 372 h | 10 |
| July | 27°C | 108 mm | 354 h | 11 |
| August | 27°C | 29 mm | 362 h | 12 |
| September | 23°C | 121 mm | 277 h | 12 |
| October | 19°C | 43 mm | 330 h | 6 |
| November | 14°C | 75 mm | 235 h | 6 |
| December | 9°C | 138 mm | 182 h | 7 |
About 3,327 hours of sun a year. Roughly 135 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.