Roosevelt Weather Forecast
- 52
- 64
Rain Showers
- 43
- 60
Rain Showers
- 40
- 61
Slight Chance Rain Showers
- 41
- 65
Mostly Sunny
- 45
- 68
Partly Sunny
- 48
- 71
Mostly Cloudy
Today 25 Dec San Bernardino and Riverside County Valleys-The Inland Empire
Mostly cloudy. A chance of Showers in the Morning, then a slight chance of Showers and Thunderstorms in the afternoon. Highs 60 to 65. Areas of Winds south 10 to 20 Mph with Gusts to 30 Mph. Chance of measurable precipitation 50 percent.
Tonight 25 Dec San Bernardino and Riverside County Valleys-The Inland Empire
Mostly cloudy. A chance of Showers in the Evening, then Showers likely overnight. Lows 46 to 52. Areas of Winds south 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph overnight. Chance of measurable precipitation 70 percent.
Roosevelt Temperature Statistics
December Temperature
San Bernardino Intl. Airport (3.7 miles)
Lowest 4 December, 2025
40.3 °FAverage December
58.3 °FHighest 10 December, 2025
87.8 °F
Climate (2020–Present)
San Bernardino Intl. Airport (3.7 miles)
Average Low 2020–2025
54.1 °FAverage 2020–2025
63.1 °FAverage High 2020–2025
80.3 °F