The year at a glance
Averages from 30 years of climate history, 1991-2020
| Johnstown | Metric | Rotterdam |
|---|---|---|
| 156 days | Sunny daysclear or partly cloudy skies | 176 days |
| 47 in | Precipitationper year | 47 in |
| 156 days | Wet daysrain or snow per year | 142 days |
| 69 in | Snowfallper year | 60 in |
| 0 days | Hot daysabove 90 °F | 10 days |
| 178 days | Freezing nightsat or below 32 °F | 140 days |
| 75% | Humidityaverage relative | 73% |
| 42 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Johnstown high | 24 | 27 | 35 | 48 | 63 | 71 | 77 | 73 | 67 | 53 | 40 | 30 |
| Rotterdam high | 33 | 36 | 44 | 59 | 71 | 79 | 83 | 82 | 75 | 61 | 49 | 38 |
| Johnstown low | 7 | 8 | 16 | 29 | 42 | 52 | 56 | 54 | 46 | 36 | 25 | 16 |
| Rotterdam low | 15 | 16 | 24 | 36 | 47 | 56 | 62 | 60 | 52 | 40 | 31 | 22 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Johnstown | 3.4 | 3.1 | 4.0 | 4.3 | 4.1 | 4.7 | 4.0 | 3.7 | 3.7 | 4.5 | 3.7 | 4.1 |
| 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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Johnstown | 8 | 9 | 12 | 13 | 13 | 15 | 18 | 18 | 17 | 14 | 11 | 8 |
| Rotterdam | 12 | 12 | 14 | 14 | 14 | 15 | 19 | 19 | 17 | 16 | 13 | 11 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Johnstown vs another city
- Johnstown vs Gloversville, NY
- Johnstown vs Amsterdam, NY
- Johnstown vs Scotia, NY
- Johnstown vs East Glenville, NY
- Johnstown vs Ballston Spa, NY
- Johnstown vs New York, NY
- Johnstown vs Los Angeles, CA
- Johnstown vs Chicago, IL
- Johnstown vs Houston, TX
- Johnstown vs Phoenix, AZ
- Johnstown vs Philadelphia, PA
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 Westmere, 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
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).