Hardly any U.S. towns collect less precipitation than Frannie: 7 inches a year
Midsummer highs settle at about 86°. May is the wettest month here, with about 6.9 times the rain of January. In January, nights here are colder than in 94% of U.S. towns. The frost-free window for a garden runs roughly May 6 to October 1.
A year in Frannie at a glance
Each month’s typical high and low, and what it brings.
What stands out about Frannie’s climate
Compared with towns across the U.S., with Frannie’s place in Wyoming beside it.
What a year in Frannie feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 148 frost-free days a year
In half of years the last 32° night comes by May 6 and the first by October 1. Frost and day counts come from NOAA’s station at Deaver, WY, 6 miles from the town’s center, 110 ft lower.
The 2023 USDA map puts Frannie’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −20°. 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 13 inches of snow a winter
Snow, measured at Lovell, WY, falls mostly in January. Precipitation (rain plus melted snow) adds up to 7 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 45 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Frannie
92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Deaver, WY.
Living with Frannie’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
148 frost-free days in zone 5a. The last frost comes by May 6 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 1.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Frannie from natural hazards, river flooding is the largest share (67%); heat waves, cold waves, winter storms and ice storms together are 18%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Frannie and similar climates
TownRatings has no climate map of the towns around Frannie yet.
Climates most like Frannie’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 |
|---|---|---|---|---|
| Frannie, WY | 10° | 86° | 7" | 13" |
| Shelley, ID | 14° | 87° | 11" | 15" |
| Vernal, UT | 9° | 90° | 9" | 20" |
| Taos, NM | 11° | 84° | 13" | 28" |
| Salida, CO | 10° | 85° | 8" | 37" |
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 Frannie averaged 2.0° warmer than the 1900s. The biggest change is in January (+4.2°).
A bigger shift than in 88% 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 Frannie compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Frannie’s place among Wyoming’s.
Frannie weather by month
Highs, lows and precipitation from NOAA’s grid at Frannie’s center; snow, wet days and snow on the ground from Lovell, WY. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 10° | 0.2" | 3.5" | 2 | 6 | 9° – 32° |
| February | 37° | 14° | 0.3" | 2.8" | 3 | 5 | 12° – 37° |
| March | 49° | 23° | 0.3" | 1.2" | 3 | 2 | 25° – 43° |
| April | 57° | 30° | 0.6" | 0.7" | 5 | 0 | 38° – 50° |
| May | 67° | 40° | 1.3" | 0.1" | 7 | 0 | 49° – 58° |
| June | 77° | 49° | 1.3" | 0.0" | 7 | 0 | 56° – 70° |
| July | 86° | 55° | 0.7" | 0.0" | 4 | 0 | 60° – 76° |
| August | 85° | 52° | 0.5" | 0.0" | 3 | 0 | 62° – 73° |
| September | 74° | 43° | 0.8" | 0.1" | 4 | 0 | 53° – 64° |
| October | 58° | 32° | 0.7" | 0.8" | 4 | 0 | 36° – 51° |
| November | 44° | 21° | 0.3" | 1.5" | 2 | 2 | 21° – 41° |
| December | 34° | 12° | 0.2" | 2.6" | 2 | 3 | 13° – 28° |
| Year | 58° | 32° | 7.0" | 13.3" | 45 | 18 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 12° to 37°. May is the most reliable, staying within 10°.
Where Frannie’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 Frannie’s center.
- Snow: Lovell, WY.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Deaver, WY, 6 miles from the town’s center, 110 ft lower; 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 Frannie’s climate
What is the weather like in Frannie?
A typical July afternoon reaches 86°, a January night drops to 10°, and about 13 inches of snow falls in a normal winter. Colder January nights than 94% of U.S. towns; hotter July afternoons than 58% of U.S. towns.
How cold does it get in Frannie in winter?
January nights average 10°. About 187 nights a year reach 32° or below and 26 reach 0° or below. In the coldest January of the last 30 years the month averaged 9°.
How much snow does Frannie get?
About 13 inches in a normal winter at Lovell, WY, most of it in January, with snow on the ground about 18 days a year.
How hot does it get in Frannie?
July, with a typical high of 86° and a low of 55°. About 41 days a year reach 90° and 3 reach 100° (Deaver, WY).
When is the first and last frost in Frannie?
In half of years the last spring frost (32°) comes by May 6 and the first fall frost by October 1, about 148 frost-free days, at Deaver, WY.
What growing zone is Frannie in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −20°.
What is the best time of year to visit Frannie?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Frannie getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Frannie.
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.