Johnston, Rhode Island Climate
United States
Pop. 29,247 Elev. 25 m / 82 ft
TZ: America/New_York (UTC-4) ·
Johnston sees mild summers peaking at 84°F (29°C) in July, and frigid winters that bottom out around 22°F (-6°C) in January. Humidity pushes the summer feels-like temperature to 91°F (33°C), while wind chill can drive winter lows to 14°F (-10°C). Precipitation occurs on roughly 51 days per year (36.5 in / 926 mm total), with snow on 7 days and 30 in (751 mm) of annual accumulation. The city averages 128 sunny days per year and around 26 thunderstorm days. Ocean water temperatures reach 73°F (23°C) in summer.
| Temperature | 84°F (29°C) high | 22°F (-5°C) low |
| Feels like | 91°F (33°C) high | 14°F (-10°C) low |
| Rain | 51 days | 36.5 in (926 mm) /yr |
| Snow | 7 days | 29.6 in (751 mm) /yr |
| Sky | 128 sunny | 26 stormy |
| Wind | 3.3 mph (1.5 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
40
Jan 62
Feb 59
Mar 66
Apr 76
May 63
Jun 61
Jul 47
Aug 55
Sep 45
Oct 47
Nov 52
Dec Humidity (%)
56
Jan 59
Feb 59
Mar 58
Apr 72
May 69
Jun 73
Jul 68
Aug 75
Sep 70
Oct 65
Nov 61
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 8 mi Rhode Island T. F. Green International Airport (PVD)
Ski resort 21 mi Yawgoo Valley Ski Area & Water Park
National park 68 mi Connecticut River Greenway State Park
Mountain peak
(5,089 ft) 161 mi Mount Lincoln
Hospital 3 mi Cardiovascular Institute of New England
Hiking trail 9 mi Redgate Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 36°F 2°C | 22°F -5°C | 1.4 in 34 mm | 4.2 in106 mm | 18 |
| February | 39°F 4°C | 25°F -4°C | 1.5 in 39 mm | 15.8 in401 mm | 7 |
| March | 51°F 11°C | 35°F 2°C | 4.4 in 111 mm | 0.0 in1 mm | 10 |
| April | 60°F 16°C | 44°F 6°C | 3.7 in 95 mm | 1.0 in26 mm | 7 |
| May | 67°F 19°C | 52°F 11°C | 6.2 in 158 mm | — | 3 |
| June | 79°F 26°C | 62°F 17°C | 2.0 in 51 mm | — | 9 |
| July | 84°F 29°C | 68°F 20°C | 3.8 in 96 mm | — | 10 |
| August | 79°F 26°C | 61°F 16°C | 2.6 in 65 mm | — | 13 |
| September | 74°F 24°C | 57°F 14°C | 2.5 in 64 mm | — | 10 |
| October | 63°F 17°C | 47°F 9°C | 3.7 in 95 mm | — | 17 |
| November | 51°F 10°C | 36°F 2°C | 2.0 in 52 mm | 0.0 in1 mm | 12 |
| December | 39°F 4°C | 24°F -4°C | 2.6 in 66 mm | 8.5 in217 mm | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 18 | 1 |
| February | 7 | 1 |
| March | 10 | 2 |
| April | 7 | 4 |
| May | 3 | 5 |
| June | 9 | 2 |
| July | 10 | 3 |
| August | 13 | 1 |
| September | 10 | 3 |
| October | 17 | 2 |
| November | 12 | 1 |
| December | 12 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 45°F 7°C | 32°F 0°C |
| February | 39°F 4°C | 32°F 0°C |
| March | 43°F 6°C | 39°F 4°C |
| April | 50°F 10°C | 48°F 9°C |
| May | 59°F 15°C | 59°F 15°C |
| June | 70°F 21°C | 68°F 20°C |
| July | 73°F 23°C | 75°F 24°C |
| August | 72°F 22°C | 70°F 21°C |
| September | 70°F 21°C | 66°F 19°C |
| October | 68°F 20°C | 56°F 13°C |
| November | 58°F 15°C | 42°F 6°C |
| December | 49°F 9°C | 33°F 1°C |