Helena, Montana Weather Forecast
Today in Helena: clear skies with a high near 68°F and a low around 38°F. Rain chance 1%. Best chance of rain is Friday at 84%. Cooling trend: highs fall from 68°F today to 42°F by Sunday.
Forecast updated 2:05 PM MDT, Oct 22
Active Weather Alerts
7-Day Forecast for Helena
Today 10/22
68°38°
Fri 10/23
84%
51°32°
Sat 10/24
43°25°
Sun 10/25
42°27°
Mon 10/26
10%
45°28°
Tue 10/27
32%
45°29°
Wed 10/28
32%
43°28°
Next 24 Hours
| Now | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | Fri12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky | | | |  | |  | | | | |  | |  | | | |  | | |  | | | | |
| Temp | 68° | 65° | 61° | 56° | 54° | 53° | 51° | 51° | 49° | 49° | 49° | 48° | 47° | 47° | 45° | 45° | 46° | 46° | 45° | 43° | 41° | 39° | 37° | 37° |
| Rain | 1% | 0% | 1% | 1% | 1% | 1% | 1% | 1% | 2% | 4% | 5% | 11% | 27% | 38% | 50% | 56% | 69% | 65% | 84% | 83% | 76% | 79% | 68% | 62% |
| Wind | SSE 6 | ESE 5 | S 4 | WSW 4 | NW 5 | WSW 5 | WSW 4 | W 3 | WSW 3 | SSW 2 | W 1 | WSW 1 | WNW 0 | W 0 | W 1 | W 2 | W 3 | W 6 | WNW 12 | NW 16 | NNW 13 | NNW 13 | NNW 11 | NNW 11 |
Growing Conditions
Growing degree days
2,412
since Apr 1, base 50°F
Rain, last 30 days
1.26 in
model analysis
Rain, year to date
14.68 in
since Jan 1
2-inch soil temperature
47°F
yesterday, daily average
Reference ET, last 7 days
0.60 in
FAO-56 grass reference
Through Oct 21. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Helena →
Current Stats & Observations
NWS Forecast
About Helena Weather
Helena sits at about 3,996 feet above sea level in Lewis and Clark County, Montana. About 52,936 people live in the Helena area. Official forecasts and warnings for the area come from the National Weather Service TFX office, and the nearest NEXRAD radar site is KTFX. The city is in USDA plant hardiness zone 4b, where the coldest winter night typically falls between -25 to -20°F. Over the past ten years the last spring freeze has come around May 12 and the first fall freeze around Oct 8.