Lake Ronkonkoma and St. James have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Lake Ronkonkoma | Metric | St. James |
|---|---|---|
| 205 days | Sunny daysclear or partly cloudy skies | 203 days |
| 47 in | Precipitationper year | 44 in |
| 121 days | Wet daysrain or snow per year | 122 days |
| 32 in | Snowfallper year | 33 in |
| 8 days | Hot daysabove 90 °F | 11 days |
| 92 days | Freezing nightsat or below 32 °F | 89 days |
| 73% | Humidityaverage relative | 73% |
| 53 °F | Average temperatureyear round | 54 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Ronkonkoma high | 39 | 41 | 48 | 58 | 68 | 77 | 83 | 81 | 75 | 64 | 54 | 44 |
| St. James high | 40 | 42 | 49 | 60 | 69 | 78 | 83 | 82 | 75 | 64 | 54 | 45 |
| Lake Ronkonkoma low | 25 | 26 | 32 | 42 | 51 | 61 | 68 | 66 | 59 | 48 | 38 | 30 |
| St. James low | 26 | 26 | 32 | 41 | 51 | 61 | 67 | 66 | 60 | 48 | 39 | 31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Ronkonkoma | 3.8 | 3.5 | 4.6 | 3.8 | 3.5 | 3.6 | 3.3 | 3.9 | 3.8 | 4.4 | 3.7 | 4.8 |
| St. James | 3.4 | 3.1 | 4.2 | 3.6 | 3.3 | 3.6 | 3.4 | 4.0 | 3.6 | 4.0 | 3.3 | 4.2 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Ronkonkoma | 17 | 16 | 17 | 16 | 15 | 16 | 19 | 19 | 18 | 19 | 17 | 17 |
| St. James | 17 | 16 | 17 | 16 | 15 | 15 | 19 | 19 | 18 | 19 | 17 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Lake Ronkonkoma vs another city
- Lake Ronkonkoma vs Lake Grove, NY
- Lake Ronkonkoma vs Ronkonkoma, NY
- Lake Ronkonkoma vs Nesconset, NY
- Lake Ronkonkoma vs Centereach, NY
- Lake Ronkonkoma vs Holbrook, NY
- Lake Ronkonkoma vs New York, NY
- Lake Ronkonkoma vs Los Angeles, CA
- Lake Ronkonkoma vs Chicago, IL
- Lake Ronkonkoma vs Houston, TX
- Lake Ronkonkoma vs Phoenix, AZ
- Lake Ronkonkoma vs Philadelphia, PA
St. James vs another city
- St. James vs Nesconset, NY
- St. James vs Lake Grove, NY
- St. James vs Stony Brook, NY
- St. James vs Stony Brook University, NY
- St. James vs Smithtown, NY
- St. James vs Centereach, NY
- St. James vs New York, NY
- St. James vs Los Angeles, CA
- St. James vs Chicago, IL
- St. James vs Houston, TX
- St. James vs Phoenix, AZ
- St. James 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).