The year at a glance
Averages from 30 years of climate history, 1991-2020
| Rotterdam | Metric | Westmere |
|---|---|---|
| 176 days | Sunny daysclear or partly cloudy skies | 180 days |
| 47 in | Precipitationper year | 44 in |
| 142 days | Wet daysrain or snow per year | 138 days |
| 60 in | Snowfallper year | 56 in |
| 10 days | Hot daysabove 90 °F | 10 days |
| 140 days | Freezing nightsat or below 32 °F | 136 days |
| 73% | Humidityaverage relative | 73% |
| 49 °F | Average temperatureyear round | 49 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rotterdam high | 33 | 36 | 44 | 59 | 71 | 79 | 83 | 82 | 75 | 61 | 49 | 38 |
| Westmere high | 33 | 36 | 45 | 59 | 71 | 79 | 84 | 82 | 75 | 62 | 49 | 38 |
| Rotterdam low | 15 | 16 | 24 | 36 | 47 | 56 | 62 | 60 | 52 | 40 | 31 | 22 |
| Westmere low | 16 | 17 | 26 | 37 | 48 | 57 | 62 | 61 | 53 | 41 | 32 | 23 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rotterdam | 3.0 | 2.8 | 3.8 | 4.1 | 4.1 | 4.8 | 4.4 | 4.2 | 4.1 | 4.5 | 3.3 | 3.8 |
| Westmere | 3.0 | 2.8 | 3.7 | 3.8 | 3.7 | 4.2 | 3.8 | 3.6 | 3.9 | 4.4 | 3.3 | 3.8 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rotterdam | 12 | 12 | 14 | 14 | 14 | 15 | 19 | 19 | 17 | 16 | 13 | 11 |
| Westmere | 13 | 13 | 14 | 15 | 14 | 15 | 19 | 19 | 17 | 16 | 14 | 12 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Rotterdam vs another city
- Rotterdam vs Schenectady, NY
- Rotterdam vs Scotia, NY
- Rotterdam vs Niskayuna, NY
- Rotterdam vs East Glenville, NY
- Rotterdam vs Colonie, NY
- Rotterdam vs New York, NY
- Rotterdam vs Los Angeles, CA
- Rotterdam vs Chicago, IL
- Rotterdam vs Houston, TX
- Rotterdam vs Phoenix, AZ
- Rotterdam vs Philadelphia, PA
Westmere vs another city
- Westmere vs Colonie, NY
- Westmere vs Roessleville, NY
- Westmere vs Albany, NY
- Westmere vs Loudonville, NY
- Westmere vs Latham, NY
- Westmere vs New York, NY
- Westmere vs Los Angeles, CA
- Westmere vs Chicago, IL
- Westmere vs Houston, TX
- Westmere vs Phoenix, AZ
- Westmere vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).