Bellevue, Washington Climate by Month
Bellevue, Washington, United States
Warm summers and cool winters, with rain spread through the year.
Warm summers and cool winters, with rain spread through the year: that's Bellevue's climate in short. Afternoon highs range from 45°F (7°C) in December to 76°F (25°C) in August, and December nights average 35°F (2°C). About 39 in (1000 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 76°F(25°C)
- Average high, August
- Coldest nights
- 35°F(2°C)
- Average low, December
- Rain per year
- 39 in(1000 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: July
Best and worst months in Bellevue
Best for weatherThe most comfortable weather comes in July and August, with highs around 76°F (24°C) and about 1.0 in (25 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 45°F (7°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 July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Bellevue weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 46°F(8°C) | 36°F(2°C) | 5.4 in(136 mm) | 81% | 1.0 |
| FebFebruary | 49°F(9°C) | 36°F(2°C) | 3.6 in(92 mm) | 77% | 1.9 |
| MarMarch | 53°F(12°C) | 38°F(3°C) | 4.4 in(112 mm) | 78% | 2.7 |
| AprApril | 58°F(15°C) | 41°F(5°C) | 3.1 in(78 mm) | 74% | 4.2 |
| MayMay | 65°F(18°C) | 47°F(8°C) | 2.0 in(50 mm) | 65% | 5.2 |
| JunJune | 70°F(21°C) | 52°F(11°C) | 1.7 in(43 mm) | 66% | 5.4 |
| JulJulyBest | 76°F(24°C) | 55°F(13°C) | 0.8 in(21 mm) | 65% | 6.0 |
| AugAugustBest | 76°F(25°C) | 55°F(13°C) | 1.1 in(29 mm) | 65% | 5.1 |
| SepSeptember | 70°F(21°C) | 52°F(11°C) | 1.7 in(43 mm) | 71% | 3.8 |
| OctOctober | 60°F(16°C) | 45°F(7°C) | 3.9 in(99 mm) | 82% | 1.9 |
| NovNovember | 51°F(11°C) | 39°F(4°C) | 5.9 in(149 mm) | 78% | 1.1 |
| DecDecember | 45°F(7°C) | 35°F(2°C) | 5.8 in(148 mm) | 83% | 0.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Bellevue →- 🇺🇸Mount VernonWashington, United States · Pop. 34k99%matchSame winter lowsSame summer highsBellevue vs Mount Vernon →
- 🇨🇦NanaimoBritish Columbia, Canada · Pop. 91k98%matchSame winter lowsSame summer highsBellevue vs Nanaimo →
- 🇨🇦VancouverBritish Columbia, Canada · Pop. 662k96%matchSame winter lowsSame summer highsBellevue vs Vancouver →
- 🇺🇸PortlandOregon, United States · Pop. 653k96%matchSame winter lowsSimilar rainfallBellevue vs Portland →
- 🇨🇦CourtenayBritish Columbia, Canada · Pop. 28k95%matchSame summer highsSame winter lowsBellevue vs Courtenay →