Grants Pass Climate by Month
Grants Pass, Oregon, United States
Hot summers and cool winters, with most rain from November to March.
The climate in Grants Pass is one of hot summers and cool winters, with most rain from November to March. Expect highs of 92°F (33°C) in August and 47°F (8°C) in December, with the coldest nights (December) near 34°F (1°C). It gets 31 in (787 mm) of rain a year, 76% of it from November to March. July and August are almost completely dry.
- Warmest month
- 92°F(33°C)
- Average high, August
- Coldest nights
- 34°F(1°C)
- Average low, December
- Rain per year
- 31 in(787 mm)
- Wettest: December
- Humidity
- 63%
- Sunniest: July
Best and worst months in Grants Pass
Best for weatherMay is the best time for weather in Grants Pass: highs near 74°F (23°C) and about 1.3 in (34 mm) of rain a month.
Least pleasantDecember is the least pleasant month: it's the coldest, with highs of only 47°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Grants Pass weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(10°C) | 34°F(1°C) | 5.0 in(126 mm) | 78% | 1.4 |
| FebFebruary | 55°F(13°C) | 35°F(2°C) | 4.1 in(103 mm) | 78% | 2.3 |
| MarMarch | 60°F(16°C) | 37°F(3°C) | 3.8 in(96 mm) | 68% | 3.5 |
| AprApril | 66°F(19°C) | 39°F(4°C) | 2.2 in(57 mm) | 66% | 4.6 |
| MayMayBest | 74°F(23°C) | 45°F(7°C) | 1.3 in(34 mm) | 58% | 5.7 |
| JunJune | 81°F(27°C) | 50°F(10°C) | 0.6 in(16 mm) | 51% | 6.6 |
| JulJuly | 91°F(33°C) | 55°F(13°C) | 0.2 in(6 mm) | 47% | 7.1 |
| AugAugust | 92°F(33°C) | 53°F(12°C) | 0.3 in(7 mm) | 44% | 6.2 |
| SepSeptember | 86°F(30°C) | 48°F(9°C) | 0.6 in(16 mm) | 49% | 4.9 |
| OctOctober | 72°F(22°C) | 41°F(5°C) | 2.0 in(52 mm) | 64% | 3.0 |
| NovNovember | 56°F(13°C) | 37°F(3°C) | 4.6 in(118 mm) | 74% | 1.6 |
| DecDecember | 47°F(8°C) | 34°F(1°C) | 6.1 in(156 mm) | 81% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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