Manchester and Rockville have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Manchester | Metric | Rockville |
|---|---|---|
| 201 days | Sunny daysclear or partly cloudy skies | 201 days |
| 43 in | Precipitationper year | 43 in |
| 125 days | Wet daysrain or snow per year | 125 days |
| 42 in | Snowfallper year | 43 in |
| 15 days | Hot daysabove 90 °F | 9 days |
| 118 days | Freezing nightsat or below 32 °F | 133 days |
| 71% | Humidityaverage relative | 71% |
| 52 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manchester high | 36 | 39 | 47 | 60 | 71 | 79 | 84 | 82 | 75 | 63 | 52 | 41 |
| Rockville high | 35 | 37 | 45 | 58 | 69 | 77 | 82 | 81 | 74 | 62 | 50 | 40 |
| Manchester low | 20 | 22 | 29 | 39 | 49 | 59 | 65 | 63 | 55 | 44 | 34 | 26 |
| Rockville low | 17 | 19 | 26 | 37 | 46 | 56 | 62 | 60 | 53 | 42 | 32 | 24 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manchester | 3.3 | 3.0 | 4.0 | 3.5 | 3.2 | 3.7 | 3.4 | 3.9 | 3.8 | 4.0 | 3.3 | 4.1 |
| Rockville | 3.3 | 3.0 | 4.0 | 3.5 | 3.2 | 3.7 | 3.4 | 3.9 | 3.8 | 4.0 | 3.3 | 4.1 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manchester | 18 | 16 | 17 | 16 | 15 | 16 | 19 | 18 | 17 | 18 | 17 | 16 |
| Rockville | 18 | 16 | 17 | 16 | 15 | 16 | 19 | 18 | 17 | 18 | 17 | 16 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Manchester vs another city
- Manchester vs East Hartford, CT
- Manchester vs Glastonbury Center, CT
- Manchester vs Hartford, CT
- Manchester vs Wethersfield, CT
- Manchester vs West Hartford, CT
- Manchester vs New York, NY
- Manchester vs Los Angeles, CA
- Manchester vs Chicago, IL
- Manchester vs Houston, TX
- Manchester vs Phoenix, AZ
- Manchester vs Philadelphia, PA
Rockville vs another city
- Rockville vs Southwood Acres, CT
- Rockville vs Hazardville, CT
- Rockville vs East Hartford, CT
- Rockville vs Storrs, CT
- Rockville vs Windsor Locks, CT
- Rockville vs New York, NY
- Rockville vs Los Angeles, CA
- Rockville vs Chicago, IL
- Rockville vs Houston, TX
- Rockville vs Phoenix, AZ
- Rockville 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).