The official National Weather Service forecast for Rayville — 39.3483°N, 94.063°W, 15.8 miles from I-35. Forecasts here are written by NWS EAX, this county’s forecast office.
| Ray County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 43 | 55 | 65 | 75 | 84 | 88 | 86 | 80 | 68 | 54 | 42 | 65 |
| Avg low °F | 19 | 23 | 33 | 43 | 54 | 63 | 67 | 65 | 57 | 45 | 34 | 24 | 44 |
| Precip in | 1.3 | 1.5 | 2.8 | 3.7 | 4.9 | 5.2 | 4.2 | 4.3 | 3.6 | 3.4 | 2.0 | 1.6 | 38.5 |
1996–2025 normals for Ray County — the climate division Rayville sits in. All-time county record high 109.3°F (1954-07-14); record low -23.1°F (1989-12-23). Source: NOAA / National Weather Service.