The official National Weather Service forecast for Ulysses — 37.5814°N, 101.3552°W, population 5,865, 110 miles from I-70.
| Grant County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 50 | 61 | 70 | 79 | 90 | 94 | 91 | 85 | 72 | 59 | 48 | 70 |
| Avg low °F | 19 | 21 | 30 | 38 | 49 | 60 | 65 | 63 | 55 | 42 | 29 | 20 | 41 |
| Precip in | 0.4 | 0.3 | 1.0 | 1.4 | 2.3 | 2.7 | 2.9 | 2.7 | 1.4 | 1.6 | 0.5 | 0.6 | 17.8 |
1996–2025 normals for Grant County — the climate division Ulysses sits in. All-time county record high 110.1°F (2012-06-28); record low -20.6°F (1984-01-19). Source: NOAA / National Weather Service.