Johnson, Vermont climate: Normal weather by month, frost dates and records
Johnson's normal year runs from 5°F January nights to 76°F July afternoons, with 46.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.3°C, January lows of −15°C, July highs of 24°C, 1,189 mm of precipitation a year.
- NOAA stationJohnson (2 mi N)
- Station IDUSC00434290
- Location44.66°N 72.68°W
- Elevation980 ft (299 m)
- From the center1 miles
- Population1,321
On October 22, the normal high in Johnson is 52°F and the normal low 34°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Johnson.
- Jan 24° 5°
- Feb 28° 7°
- Mar 36° 16°
- Apr 50° 30°
- May 63° 42°
- Jun 71° 51°
- Jul 76° 56°
- Aug 74° 54°
- Sep 68° 46°
- Oct 54° 36°
- Nov 42° 26°
- Dec 30° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Johnson each month?
July is the warmest month, with normal highs of 76°F; January the coldest, with normal lows of 5°F. The most precipitation falls in October (5.16 in), the least in February (2.38 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 24°F | 5°F | 14.4°F | 2.81 | – | <1 | 31 | 9 h 10 min |
| February | 28°F | 7°F | 17.1°F | 2.38 | – | <1 | 28 | 10 h 20 min |
| March | 36°F | 16°F | 26.3°F | 2.77 | – | <1 | 30 | 11 h 50 min |
| April | 50°F | 30°F | 40.0°F | 3.79 | – | <1 | 21 | 13 h 30 min |
| May | 63°F | 42°F | 52.7°F | 5.04 | – | <1 | 4 | 14 h 50 min |
| June | 71°F | 51°F | 61.2°F | 4.65 | – | <1 | <1 | 15 h 30 min |
| July | 76°F | 56°F | 65.8°F | 4.49 | – | <1 | <1 | 15 h 20 min |
| August | 74°F | 54°F | 64.1°F | 4.37 | – | <1 | <1 | 14 h 10 min |
| September | 68°F | 46°F | 56.9°F | 4.04 | – | <1 | 2 | 12 h 40 min |
| October | 54°F | 36°F | 45.0°F | 5.16 | – | <1 | 10 | 11 h |
| November | 42°F | 26°F | 33.7°F | 3.74 | – | <1 | 25 | 9 h 40 min |
| December | 30°F | 14°F | 22.1°F | 3.59 | – | <1 | 29 | 8 h 50 min |
| Year (annual) | 51°F | 32°F | 41.6°F | 46.83 | – | <1 | 177 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −4°C | −15°C | −9.8°C | 71 mm |
| February | −2°C | −14°C | −8.3°C | 60 mm |
| March | 2°C | −9°C | −3.2°C | 70 mm |
| April | 10°C | −1°C | 4.4°C | 96 mm |
| May | 17°C | 5°C | 11.5°C | 128 mm |
| June | 22°C | 11°C | 16.2°C | 118 mm |
| July | 24°C | 13°C | 18.8°C | 114 mm |
| August | 24°C | 12°C | 17.8°C | 111 mm |
| September | 20°C | 8°C | 13.8°C | 103 mm |
| October | 12°C | 2°C | 7.2°C | 131 mm |
| November | 5°C | −4°C | 0.9°C | 95 mm |
| December | −1°C | −10°C | −5.5°C | 91 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Mount Mansfield (11 miles away), gets 235 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00434290; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Johnson?
Normal highs sit between 65°F and 85°F in June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00434290.
When is the last frost in Johnson?
In Johnson, the last spring frost (32°F) comes after May 9 in half of years and after May 24 in one year in ten; the first autumn frost comes before October 1 in half of years and before September 19 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 91 year in 10 after May 24; 9 in 10 after April 27
- First autumn frost, half of years before
- October 11 year in 10 before September 19; 9 in 10 before October 14
NOAA puts the median frost-free season at 142 days, and the season without a hard freeze (28°F) at 166 days.
A hard freeze (28°F) comes after April 28 in half of springs and before October 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Johnson in zone 5a in ZIP code 05656, the nearest ZIP area.
Frost dates for every NOAA station in Vermont · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00434290; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Johnson?
In a normal year in Johnson, a 90°F day is rare and 177 nights fall to 32°F or colder.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 177a normal year
- Days that stay below freezing
- 81high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00434290.
How sunny is Johnson?
Over a year 66% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Johnson, 3.5 kWh per square metre a day. August is the sunniest month (74%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.4 |
| February | 61% | 2.2 |
| March | 63% | 3.3 |
| April | 63% | 4.3 |
| May | 65% | 5.1 |
| June | 69% | 5.6 |
| July | 73% | 5.7 |
| August | 74% | 5.0 |
| September | 74% | 4.0 |
| October | 61% | 2.4 |
| November | 57% | 1.5 |
| December | 52% | 1.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Johnson need?
A normal year in Johnson brings 8,684 heating degree days, 62% more than the median U.S. place (5,373), and 183 cooling degree days, 80% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,730 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,570 | 0 |
| February | 1,341 | 0 |
| March | 1,201 | 0 |
| April | 750 | 0 |
| May | 389 | 6 |
| June | 148 | 34 |
| July | 51 | 74 |
| August | 78 | 48 |
| September | 266 | 21 |
| October | 620 | 0 |
| November | 941 | 0 |
| December | 1,330 | 0 |
| Year (annual) | 8,684 | 183 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00434290. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Johnson been warmer than normal lately?
2025 averaged 41.5°F, 0.1°F below the 1991-2020 normal of 41.6°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 43.1°F | +1.5°F | 38.25 |
| 2023 | 44.4°F | +2.8°F | – |
| 2024 | 44.6°F | +3.0°F | 49.86 |
| 2025 | 41.5°F | −0.1°F | 45.35 |
Source: observed years: ACIS, station USC00434290. A year counts only with all twelve months complete.
How does Johnson's climate compare?
Johnson is warmer than 4 of the other 28 places with their own NOAA record in Vermont, and wetter than 21. Across the 7,247 U.S. stations with normals, its annual mean of 41.6°F is warmer than 9%.
In the Köppen classification computed from these normals, Johnson is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Johnson share this climate record?
Jeffersonville has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Jeffersonville, VT754 people · 7 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Johnson's climate
What is the coldest month in Johnson?
January, with a normal high of 24°F and a normal low of 5°F. The warmest is July (76°F by day, 56°F at night).
Does it snow in Johnson?
Yes. NOAA publishes no 1991-2020 snowfall normal for Johnson's NOAA station; the nearest record that keeps one, Mount Mansfield (11 miles away), records 235 inches of snow in a normal year.
What is the rainiest month in Johnson?
October, with 5.16 in of precipitation in a normal year; the driest is February with 2.38 in.
What plant hardiness zone is Johnson in?
The USDA's 2023 map puts Johnson in zone 5a in ZIP code 05656, the nearest ZIP area.
How late can frost come in Johnson?
In half of years the last 32°F night comes after May 9; in one year in ten it comes after May 24. Waiting until May 24 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Vermont climateThe statewide normals and every place in the state
- Eden (2 mi S), VT6 miles from this station, 42.1°F a year
- Morrisville, VT9 miles from this station, 42.5°F a year
- Mount Mansfield, VT11 miles from this station, 38.4°F a year
- Enosburg Falls, VT19 miles from this station, 45.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made