White Hall, Illinois climate: Normal weather by month, frost dates and records
White Hall's normal year runs from 18°F January nights to 86°F July afternoons, with 39.6 inches of precipitation and 18 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.6°C, January lows of −8°C, July highs of 30°C, 1,005 mm of precipitation a year.
- NOAA stationWhite Hall (1 mi E)
- Station IDUSC00119241
- Location39.44°N 90.38°W
- Elevation580 ft (177 m)
- Population2,174
On October 23, the normal high in White Hall is 64°F and the normal low 41°F, and the chance of measurable rain or snow is 31%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for White Hall.
- Jan 35° 18°
- Feb 41° 22°
- Mar 52° 32°
- Apr 64° 42°
- May 74° 53°
- Jun 83° 62°
- Jul 86° 66°
- Aug 84° 64°
- Sep 79° 55°
- Oct 67° 43°
- Nov 52° 33°
- Dec 41° 24°
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 White Hall each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 18°F. The most precipitation falls in May (4.81 in), the least in February (2.05 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 35°F | 18°F | 26.9°F | 2.06 | 6.3 | 8 | <1 | 28 | 9 h 40 min |
| February | 41°F | 22°F | 31.2°F | 2.05 | 4.7 | 7 | <1 | 24 | 10 h 40 min |
| March | 52°F | 32°F | 41.6°F | 2.91 | 1.8 | 11 | <1 | 18 | 11 h 50 min |
| April | 64°F | 42°F | 53.0°F | 4.41 | 0.4 | 12 | <1 | 5 | 13 h 10 min |
| May | 74°F | 53°F | 63.5°F | 4.81 | 0.0 | 13 | 1 | <1 | 14 h 20 min |
| June | 83°F | 62°F | 72.4°F | 4.67 | 0.0 | 11 | 6 | <1 | 15 h |
| July | 86°F | 66°F | 75.7°F | 3.87 | 0.0 | 9 | 9 | <1 | 14 h 40 min |
| August | 84°F | 64°F | 74.0°F | 3.35 | 0.0 | 9 | 6 | <1 | 13 h 50 min |
| September | 79°F | 55°F | 67.0°F | 2.99 | 0.0 | 8 | 3 | <1 | 12 h 30 min |
| October | 67°F | 43°F | 55.1°F | 3.02 | 0.0 | 10 | <1 | 4 | 11 h 10 min |
| November | 52°F | 33°F | 42.5°F | 3.11 | 1.3 | 9 | <1 | 16 | 10 h |
| December | 41°F | 24°F | 32.1°F | 2.33 | 3.7 | 9 | <1 | 26 | 9 h 20 min |
| Year (annual) | 63°F | 43°F | 52.9°F | 39.58 | 18.2 | 116 | 25 | 120 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −8°C | −2.8°C | 52 mm | 16 cm |
| February | 5°C | −6°C | −0.4°C | 52 mm | 12 cm |
| March | 11°C | 0°C | 5.3°C | 74 mm | 5 cm |
| April | 18°C | 5°C | 11.7°C | 112 mm | 1 cm |
| May | 23°C | 12°C | 17.5°C | 122 mm | 0 cm |
| June | 28°C | 17°C | 22.4°C | 119 mm | 0 cm |
| July | 30°C | 19°C | 24.3°C | 98 mm | 0 cm |
| August | 29°C | 18°C | 23.3°C | 85 mm | 0 cm |
| September | 26°C | 13°C | 19.4°C | 76 mm | 0 cm |
| October | 19°C | 6°C | 12.8°C | 77 mm | 0 cm |
| November | 11°C | 0°C | 5.8°C | 79 mm | 3 cm |
| December | 5°C | −5°C | 0.1°C | 59 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00119241; 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 White Hall?
Normal highs sit between 65°F and 85°F in May, June, August, September and October. Of those, September has the fewest days with rain (8).
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 USC00119241.
When is the last frost in White Hall?
In White Hall, the last spring frost (32°F) comes after April 13 in half of years and after April 28 in one year in ten; the first autumn frost comes before October 22 in half of years and before October 9 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
- April 131 year in 10 after April 28; 9 in 10 after March 30
- First autumn frost, half of years before
- October 221 year in 10 before October 9; 9 in 10 before November 2
NOAA puts the median frost-free season at 190 days, and the season without a hard freeze (28°F) at 211 days.
A hard freeze (28°F) comes after April 2 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts White Hall in zone 6a in ZIP code 62092, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, White Hall's NOAA station is in zone 6a: the coldest night of a typical year reaches −6°F (28 complete years).
Frost dates for every NOAA station in Illinois · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00119241; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 White Hall?
In a normal year in White Hall, 25 days a year reach 90°F, 120 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 25a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 120a normal year
- Days that stay below freezing
- 31high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
- Days with 1 inch of snow or more
- 7a normal year
The highest temperature in this station's record (since 1887) is 113°F, on July 24, 1934; the lowest is −26°F, on January 7, 1912.
The wettest calendar year on that record is 2015, with 61.15 in; the snowiest season is 1959–60, with 39.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00119241; records: ACIS (NOAA Regional Climate Centers), station USC00119241. Records use complete months only; a month missing more than three days is left out.
How sunny is White Hall?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around White Hall, 4.1 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 2.0 |
| February | 67% | 2.8 |
| March | 68% | 3.7 |
| April | 72% | 4.9 |
| May | 73% | 5.6 |
| June | 80% | 6.3 |
| July | 83% | 6.4 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.3 |
| November | 72% | 2.3 |
| December | 65% | 1.7 |
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 White Hall need?
A normal year in White Hall brings 5,477 heating degree days, 2% more than the median U.S. place (5,373), and 1,107 cooling degree days, 22% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,639 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,181 | 0 |
| February | 946 | 0 |
| March | 727 | 2 |
| April | 374 | 13 |
| May | 131 | 86 |
| June | 14 | 236 |
| July | 2 | 332 |
| August | 4 | 283 |
| September | 71 | 131 |
| October | 331 | 24 |
| November | 678 | 1 |
| December | 1,020 | 0 |
| Year (annual) | 5,477 | 1,107 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00119241. 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 White Hall been warmer than normal lately?
2025 averaged 54.1°F, 1.2°F above the 1991-2020 normal of 52.9°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 54.2°F | +1.3°F | 48.86 | 11.5 |
| 2022 | 52.2°F | −0.7°F | 40.73 | – |
| 2023 | 54.9°F | +2.0°F | 32.24 | 3.4 |
| 2024 | 55.5°F | +2.6°F | 44.48 | – |
| 2025 | 54.1°F | +1.2°F | 25.70 | 17.1 |
Over 101 complete years from 1889 to 2025, the station's annual mean temperature rose at a fitted 1.5°F per century (+0.08°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00119241; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does White Hall's climate compare?
White Hall is warmer than 92 of the other 143 places with their own NOAA record in Illinois, and wetter than 65. Across the 7,247 U.S. stations with normals, its annual mean of 52.9°F is warmer than 53%.
In the Köppen classification computed from these normals, White Hall is Dfa: continental, no dry season, hot 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 White Hall share this climate record?
7 places have no NOAA station with 1991-2020 normals of their 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.
- Carrollton, IL2,374 people · 10 mi S
- Roodhouse, IL1,499 people · 3 mi N
- Greenfield, IL1,006 people · 11 mi SE
- Manchester, IL261 people · 7 mi N
- Scottville, IL95 people · 15 mi E
- Hillview, IL92 people · 9 mi W
- Wilmington, IL86 people · 6 mi NW
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 White Hall's climate
What is the coldest month in White Hall?
January, with a normal high of 35°F and a normal low of 18°F. The warmest is July (86°F by day, 66°F at night).
Does it snow in White Hall?
Yes: 18 inches in a normal year, falling on 10 days with 0.1 inch or more, the most in January (6.3 inches).
What is the rainiest month in White Hall?
May, with 4.81 in of precipitation in a normal year; the driest is February with 2.05 in.
What plant hardiness zone is White Hall in?
The USDA's 2023 map puts White Hall in zone 6a in ZIP code 62092, the nearest ZIP area. By the same method at White Hall's NOAA station, the coldest night of a typical year reaches −6°F (28 years, 1991-2020): zone 6a.
How late can frost come in White Hall?
In half of years the last 32°F night comes after April 13; in one year in ten it comes after April 28. Waiting until April 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Winchester, IL14 miles from this station, 52.9°F a year
- Jacksonville, IL21 miles from this station, 52.8°F a year
- Jerseyville, IL24 miles from this station, 53.4°F a year
- Pittsfield, IL25 miles from this station, 53.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made