Portales, New Mexico Weather
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Climate of Portales: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Portales, with average daytime highs around 34°C. January is the coolest, when nights typically fall to about -3°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 38°C, so the seasons feel very different from each other.
The area receives about 420 mm of rain in a typical year. Rainfall is modest in every month; August is the wettest at about 65 mm. The driest stretch is November to February, with under 20 mm a month.
For outdoor plans and travel, April to May and September to October usually offer the most comfortable weather in Portales, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 11° | -3° | 13 mm | 54% |
| Feb | 14° | -2° | 12 mm | 50% |
| Mar | 19° | 3° | 24 mm | 44% |
| Apr | 24° | 7° | 20 mm | 38% |
| May | 29° | 13° | 46 mm | 40% |
| Jun | 34° | 18° | 52 mm | 43% |
| Jul | 34° | 20° | 59 mm | 47% |
| Aug | 33° | 20° | 65 mm | 50% |
| Sep | 29° | 15° | 59 mm | 54% |
| Oct | 23° | 8° | 42 mm | 52% |
| Nov | 16° | 2° | 15 mm | 52% |
| Dec | 11° | -3° | 13 mm | 55% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Portales. Values describe typical conditions, not a forecast.
About Portales weather
Portales is one of many towns in New Mexico's high-desert climate, arid with large day-night temperature swings, about 290 km south-east of Santa Fe. Before the rains arrive, there's hot days (June–August, often above 32°C) that cool quickly after dark. Cooler months mean cold nights and mild, sunny days, with snow common at higher elevations. This page shows live, auto-refreshing weather for Portales: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Denver.
Frequently asked questions
Portales is about 290 km south-east of Santa Fe, in New Mexico.
Portales sees cold nights and mild, sunny days, with snow common at higher elevations.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Portales's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Portales, with average daytime highs of about 34°C and nights around 20°C.
The coldest nights come in January, when the average low is about -3°C and daytime highs reach around 11°C. Frost is possible on clear, calm nights.
Portales receives about 420 mm of rain in a typical year. August is the wettest month at roughly 65 mm; no month averages more than 100 mm.
April to May and September to October usually offer the most comfortable weather in Portales, with mild daytime temperatures and little rain.
In November Portales typically sees daytime highs near 16°C and lows near 2°C, with about 15 mm of rain over the month and average humidity around 52%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Portales is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Portales's day-to-day weather follows the broader pattern of New Mexico described above. See the hourly weather forecast or the air quality index for more detail.