In Hillview, July heat, January chill and rainfall all sit near the middle of U.S. towns
The depth of winter brings overnight lows near 20°. Summer afternoons here are warmer than in 60% of U.S. towns. Compared with 1901–2000, the average now sits 0.6° higher. Keep the boiler serviced for the months from November to March, which average under 50°.
A year in Hillview at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hillview’s climate
Compared with towns across the U.S., with Hillview’s place in Illinois beside it.
What a year in Hillview feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 190 frost-free days a year
In half of years the last 32° night comes by April 13 and the first by October 22. Frost and day counts come from NOAA’s station at White Hall 1 E, IL, 9 miles from the town’s center, at about the same height.
The 2023 USDA map puts Hillview’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −5°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 18 inches of snow a winter
Snow, measured at White Hall 1 E, IL, falls mostly in January. Precipitation (rain plus melted snow) adds up to 41 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 116 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Hillview
83% of the work is heating. Months averaging under 55° run from November through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at White Hall 1 E, IL.
Living with Hillview’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
190 frost-free days in zone 6a. The last frost comes by Apr 13 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 22.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Hillview from natural hazards, river flooding is the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 20%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hillview and similar climates
TownRatings has no climate map of the towns around Hillview yet.
Climates most like Hillview’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Hillview, IL | 20° | 87° | 41" | 18" |
| Excelsior Springs, MO | 19° | 87° | 40" | 19" |
| Terre Haute, IN | 21° | 87° | 43" | 15" |
| Strasburg, VA | 23° | 87° | 39" | 21" |
| Louisburg, KS | 21° | 88° | 41" | 14" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Hillview averaged 0.6° warmer than the 1900s. The biggest change is in December (+1.7°).
A smaller shift than in 97% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Hillview compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hillview’s place among Illinois’.
Hillview weather by month
Highs, lows and precipitation from NOAA’s grid at Hillview’s center; snow, wet days and snow on the ground from White Hall 1 E, IL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 36° | 20° | 2.3" | 6.3" | 8 | 9 | 22° – 39° |
| February | 42° | 24° | 2.1" | 4.7" | 7 | 6 | 21° – 43° |
| March | 53° | 33° | 3.0" | 1.8" | 11 | 1 | 35° – 57° |
| April | 66° | 43° | 4.3" | 0.4" | 12 | 0 | 47° – 60° |
| May | 75° | 54° | 4.9" | 0.0" | 13 | 0 | 59° – 73° |
| June | 84° | 63° | 4.9" | 0.0" | 11 | 0 | 69° – 77° |
| July | 87° | 66° | 4.0" | 0.0" | 9 | 0 | 71° – 82° |
| August | 86° | 64° | 3.5" | 0.0" | 9 | 0 | 69° – 81° |
| September | 79° | 56° | 3.3" | 0.0" | 8 | 0 | 62° – 73° |
| October | 67° | 45° | 3.1" | 0.0" | 10 | 0 | 51° – 62° |
| November | 53° | 34° | 3.1" | 1.3" | 9 | 1 | 36° – 51° |
| December | 41° | 25° | 2.3" | 3.7" | 9 | 3 | 19° – 42° |
| Year | 64° | 44° | 40.5" | 18.2" | 116 | 20 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 19° to 42°. June is the most reliable, staying within 8°.
Where Hillview’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Hillview’s center.
- Snow: White Hall 1 E, IL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: White Hall 1 E, IL, 9 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Hillview’s climate
What is the weather like in Hillview?
A typical July afternoon reaches 87°, a January night drops to 20°, and about 18 inches of snow falls in a normal winter. Colder January nights than 58% of U.S. towns; hotter July afternoons than 60% of U.S. towns.
How cold does it get in Hillview in winter?
January nights average 20°. About 120 nights a year reach 32° or below and 5 reach 0° or below. In the coldest January of the last 30 years the month averaged 22°.
How much snow does Hillview get?
About 18 inches in a normal winter at White Hall 1 E, IL, most of it in January, with snow on the ground about 20 days a year.
How hot does it get in Hillview?
July, with a typical high of 87° and a low of 66°. About 25 days a year reach 90° (White Hall 1 E, IL).
When is the first and last frost in Hillview?
In half of years the last spring frost (32°) comes by April 13 and the first fall frost by October 22, about 190 frost-free days, at White Hall 1 E, IL.
What growing zone is Hillview in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −5°.
What is the best time of year to visit Hillview?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Hillview getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 97% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hillview.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.