Pana, Illinois climate: Normal weather by month, frost dates and records
Pana's normal year runs from 19°F January nights to 87°F July afternoons, with 42.3 inches of precipitation and 15 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.0°C, January lows of −7°C, July highs of 31°C, 1,074 mm of precipitation a year.
- NOAA stationPana
- Station IDUSC00116579
- Location39.37°N 89.09°W
- Elevation650 ft (198 m)
- From the center2 miles
- Population5,034
On October 23, the normal high in Pana is 65°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 Pana.
- Jan 37° 19°
- Feb 42° 23°
- Mar 53° 31°
- Apr 66° 41°
- May 76° 52°
- Jun 84° 62°
- Jul 87° 65°
- Aug 86° 63°
- Sep 81° 55°
- Oct 68° 44°
- Nov 53° 33°
- Dec 42° 25°
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 Pana each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 19°F. The most precipitation falls in June (5.07 in), the least in February (2.15 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 37°F | 19°F | 27.9°F | 2.78 | 5.1 | 9 | <1 | 27 | 9 h 40 min |
| February | 42°F | 23°F | 32.0°F | 2.15 | 2.6 | 8 | <1 | 23 | 10 h 40 min |
| March | 53°F | 31°F | 42.1°F | 3.02 | 2.6 | 11 | <1 | 17 | 11 h 50 min |
| April | 66°F | 41°F | 53.5°F | 4.80 | 0.5 | 12 | <1 | 4 | 13 h 10 min |
| May | 76°F | 52°F | 63.9°F | 4.75 | 0.0 | 13 | 1 | <1 | 14 h 20 min |
| June | 84°F | 62°F | 73.1°F | 5.07 | 0.0 | 11 | 8 | <1 | 15 h |
| July | 87°F | 65°F | 76.2°F | 4.01 | 0.0 | 9 | 12 | <1 | 14 h 40 min |
| August | 86°F | 63°F | 74.5°F | 3.00 | 0.0 | 8 | 8 | <1 | 13 h 50 min |
| September | 81°F | 55°F | 67.8°F | 3.25 | 0.0 | 8 | 5 | <1 | 12 h 30 min |
| October | 68°F | 44°F | 55.9°F | 3.53 | 0.1 | 9 | <1 | 3 | 11 h 10 min |
| November | 53°F | 33°F | 43.3°F | 3.68 | 0.9 | 10 | <1 | 15 | 10 h |
| December | 42°F | 25°F | 33.1°F | 2.26 | 2.7 | 9 | <1 | 25 | 9 h 20 min |
| Year (annual) | 65°F | 43°F | 53.6°F | 42.30 | 14.5 | 116 | 34 | 114 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −7°C | −2.3°C | 71 mm | 13 cm |
| February | 5°C | −5°C | 0.0°C | 55 mm | 7 cm |
| March | 12°C | 0°C | 5.6°C | 77 mm | 7 cm |
| April | 19°C | 5°C | 11.9°C | 122 mm | 1 cm |
| May | 24°C | 11°C | 17.7°C | 121 mm | 0 cm |
| June | 29°C | 17°C | 22.8°C | 129 mm | 0 cm |
| July | 31°C | 18°C | 24.6°C | 102 mm | 0 cm |
| August | 30°C | 17°C | 23.6°C | 76 mm | 0 cm |
| September | 27°C | 13°C | 19.9°C | 83 mm | 0 cm |
| October | 20°C | 7°C | 13.3°C | 90 mm | 0 cm |
| November | 12°C | 1°C | 6.3°C | 93 mm | 2 cm |
| December | 5°C | −4°C | 0.6°C | 57 mm | 7 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00116579; 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 Pana?
Normal highs sit between 65°F and 85°F in April, May, June, 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 USC00116579.
When is the last frost in Pana?
In Pana, the last spring frost (32°F) comes after April 17 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 8 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 171 year in 10 after May 3; 9 in 10 after April 4
- First autumn frost, half of years before
- October 231 year in 10 before October 8; 9 in 10 before November 3
NOAA puts the median frost-free season at 188 days, and the season without a hard freeze (28°F) at 210 days.
A hard freeze (28°F) comes after April 5 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Pana in zone 6b in ZIP code 62557, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Pana's NOAA station is in zone 6b: the coldest night of a typical year reaches −5°F (20 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 USC00116579; 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 Pana?
In a normal year in Pana, 34 days a year reach 90°F (1 of them 100°F or more), 114 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 34a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 114a normal year
- Days that stay below freezing
- 25high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
- Days with 1 inch of snow or more
- 6a normal year
The highest temperature in this station's record (since 1890) is 115°F, on July 14, 1954; the lowest is −25°F, on January 7, 1912.
The wettest calendar year on that record is 1927, with 57.28 in; the snowiest season is 1977–78, with 60.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00116579; records: ACIS (NOAA Regional Climate Centers), station USC00116579. Records use complete months only; a month missing more than three days is left out.
How sunny is Pana?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Pana, 4.1 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.9 |
| February | 66% | 2.8 |
| March | 67% | 3.7 |
| April | 72% | 5.0 |
| May | 73% | 5.6 |
| June | 81% | 6.4 |
| July | 83% | 6.4 |
| August | 82% | 5.7 |
| September | 82% | 4.7 |
| October | 74% | 3.3 |
| November | 71% | 2.3 |
| December | 63% | 1.6 |
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 Pana need?
A normal year in Pana brings 5,289 heating degree days, 2% fewer than the median U.S. place (5,373), and 1,172 cooling degree days, 29% 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 3,750 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,148 | 0 |
| February | 923 | 0 |
| March | 713 | 2 |
| April | 359 | 12 |
| May | 124 | 90 |
| June | 12 | 253 |
| July | 1 | 348 |
| August | 3 | 298 |
| September | 58 | 142 |
| October | 306 | 26 |
| November | 653 | 2 |
| December | 989 | 0 |
| Year (annual) | 5,289 | 1,172 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00116579. 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 Pana been warmer than normal lately?
2025 averaged 55.0°F, 1.4°F above the 1991-2020 normal of 53.6°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 54.6°F | +1.0°F | 47.82 | 8.9 |
| 2022 | 53.0°F | −0.6°F | 42.03 | 14.5 |
| 2024 | 56.3°F | +2.7°F | 42.99 | 5.9 |
| 2025 | 55.0°F | +1.4°F | 29.16 | 24.2 |
Over 97 complete years from 1889 to 2025, the station's annual mean temperature rose at a fitted 1.0°F per century (+0.06°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00116579; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Pana's climate compare?
Pana is warmer than 102 of the other 143 places with their own NOAA record in Illinois, and wetter than 106. Across the 7,247 U.S. stations with normals, its annual mean of 53.6°F is warmer than 55%.
In the Köppen classification computed from these normals, Pana 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 Pana share this climate record?
8 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.
- Nokomis, IL2,127 people · 12 mi SW
- Assumption, IL1,123 people · 11 mi N
- Stonington, IL800 people · 19 mi N
- Tower Hill, IL473 people · 7 mi E
- Owaneco, IL204 people · 10 mi NW
- Oconee, IL136 people · 6 mi S
- Ohlman, IL107 people · 7 mi W
- Wenonah, IL28 people · 11 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 Pana's climate
What is the coldest month in Pana?
January, with a normal high of 37°F and a normal low of 19°F. The warmest is July (87°F by day, 65°F at night).
Does it snow in Pana?
Yes: 15 inches in a normal year, falling on 9 days with 0.1 inch or more, the most in January (5.1 inches).
What is the rainiest month in Pana?
June, with 5.07 in of precipitation in a normal year; the driest is February with 2.15 in.
What plant hardiness zone is Pana in?
The USDA's 2023 map puts Pana in zone 6b in ZIP code 62557, the nearest ZIP area. By the same method at Pana's NOAA station, the coldest night of a typical year reaches −5°F (20 years, 1991-2020): zone 6b.
How late can frost come in Pana?
In half of years the last 32°F night comes after April 17; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Ramsey, IL16 miles from this station, 52.5°F a year
- Shelbyville, IL17 miles from this station, 53.6°F a year
- Morrisonville, IL21 miles from this station, 53.6°F a year
- Hillsboro, IL26 miles from this station, 55.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made